That's a compile error in Chrome:


=== Start output for job chromeos-chrome-59.0.3071.94_rc-r1 (0m8.3s) ===
chromeos-chrome-59.0.3071.94_rc-r1: >>> Emerging (1 of 1) chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1::chromiumos for /build/samus/
chromeos-chrome-59.0.3071.94_rc-r1:  * Running stacked hooks for pre_pkg_setup
chromeos-chrome-59.0.3071.94_rc-r1:  *    sysroot_build_bin_dir ...
chromeos-chrome-59.0.3071.94_rc-r1:  [ ok ]
chromeos-chrome-59.0.3071.94_rc-r1:  * Running stacked hooks for pre_src_unpack
chromeos-chrome-59.0.3071.94_rc-r1:  *    python_multilib_setup ...
chromeos-chrome-59.0.3071.94_rc-r1:  [ ok ]
chromeos-chrome-59.0.3071.94_rc-r1: >>> Unpacking source...
chromeos-chrome-59.0.3071.94_rc-r1:  * CHROME_ORIGIN VALUE is LOCAL_SOURCE
chromeos-chrome-59.0.3071.94_rc-r1:  * Using GN from /home/chrome-bot/chrome_root/src/buildtools/linux64/gn
chromeos-chrome-59.0.3071.94_rc-r1: >>> Source unpacked in /build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/work
chromeos-chrome-59.0.3071.94_rc-r1:  * Running stacked hooks for post_src_unpack
chromeos-chrome-59.0.3071.94_rc-r1:  *    asan_init ...
chromeos-chrome-59.0.3071.94_rc-r1:  [ ok ]
chromeos-chrome-59.0.3071.94_rc-r1:  * Running stacked hooks for pre_src_prepare
chromeos-chrome-59.0.3071.94_rc-r1:  *    enable_cxx_exceptions ...
chromeos-chrome-59.0.3071.94_rc-r1:  [ ok ]
chromeos-chrome-59.0.3071.94_rc-r1: >>> Preparing source in /build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/work/chromeos-chrome-59.0.3071.94_rc ...
chromeos-chrome-59.0.3071.94_rc-r1:  * /home/chrome-bot/chrome_root should be set here properly
chromeos-chrome-59.0.3071.94_rc-r1: >>> Source prepared.
chromeos-chrome-59.0.3071.94_rc-r1: >>> Configuring source in /build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/work/chromeos-chrome-59.0.3071.94_rc ...
chromeos-chrome-59.0.3071.94_rc-r1:  * Using gold from the following location: /usr/x86_64-pc-linux-gnu/x86_64-cros-linux-gnu/binutils-bin/2.25.51-gold
chromeos-chrome-59.0.3071.94_rc-r1:  * Building with the compiler settings:
chromeos-chrome-59.0.3071.94_rc-r1:  *   CFLAGS = -pipe -pipe -march=corei7 -Wno-unknown-warning-option
chromeos-chrome-59.0.3071.94_rc-r1:  *   CXXFLAGS = -pipe -pipe -pipe -march=corei7 -D__google_stl_debug_vector=1 -Wno-unknown-warning-option
chromeos-chrome-59.0.3071.94_rc-r1:  *   CPPFLAGS = 
chromeos-chrome-59.0.3071.94_rc-r1:  *   LDFLAGS = -Wl,-O1 -Wl,-O2 -Wl,--as-needed
chromeos-chrome-59.0.3071.94_rc-r1: /home/chrome-bot/depot_tools/gclient runhooks --force
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/landmines.py' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/tools/remove_stale_pyc_files.py src/android_webview/tools src/build/android src/gpu/gles2_conform_support src/infra src/ppapi src/printing src/third_party/catapult src/third_party/closure_compiler/build src/third_party/WebKit/Tools/Scripts src/tools' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/download_nacl_toolchains.py --mode nacl_core_sdk sync --extract' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/play_services/update.py download' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-intellij -l third_party/intellij' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-javax-inject -l third_party/javax_inject' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-hamcrest -l third_party/hamcrest' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-guava -l third_party/guava' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-android-support-test-runner -l third_party/android_support_test_runner' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-byte-buddy -l third_party/byte_buddy' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-espresso -l third_party/espresso' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-robolectric -l third_party/robolectric' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-apache-velocity -l third_party/apache_velocity' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-ow2-asm -l third_party/ow2_asm' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-android-tools/retrolambda -l third_party/retrolambda' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-android-tools/apk-patch-size-estimator -l third_party/apk-patch-size-estimator/lib' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-icu4j -l third_party/icu4j' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-accessibility-test-framework -l third_party/accessibility_test_framework' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-bouncycastle -l third_party/bouncycastle' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-sqlite4java -l third_party/sqlite4java' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-objenesis -l third_party/objenesis' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/update_deps/update_third_party_deps.py download -b chromium-robolectric -l third_party/xstream' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/linux/sysroot_scripts/install-sysroot.py --running-as-hook' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: Jessie amd64 sysroot image already up to date: /home/chrome-bot/chrome_root/src/build/linux/debian_jessie_amd64-sysroot
chromeos-chrome-59.0.3071.94_rc-r1: Jessie i386 sysroot image already up to date: /home/chrome-bot/chrome_root/src/build/linux/debian_jessie_i386-sysroot
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/vs_toolchain.py update' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/mac_toolchain.py' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/third_party/binutils/download.py' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/tools/clang/scripts/update.py --if-needed' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: Updating Clang to 299960-1...
chromeos-chrome-59.0.3071.94_rc-r1: Clang is already up to date.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/util/lastchange.py -o src/build/util/LASTCHANGE' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/util/lastchange.py --git-hash-only -s src/third_party/WebKit -o src/build/util/LASTCHANGE.blink' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/util/lastchange.py -m SKIA_COMMIT_HASH -s src/third_party/skia --header src/skia/ext/skia_commit_hash.h' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=win32 --no_auth --bucket chromium-gn -s src/buildtools/win/gn.exe.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "win32", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=darwin --no_auth --bucket chromium-gn -s src/buildtools/mac/gn.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "darwin", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=linux* --no_auth --bucket chromium-gn -s src/buildtools/linux64/gn.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/buildtools/linux64/gn exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.004213 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=win32 --no_auth --bucket chromium-clang-format -s src/buildtools/win/clang-format.exe.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "win32", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=darwin --no_auth --bucket chromium-clang-format -s src/buildtools/mac/clang-format.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "darwin", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=linux* --no_auth --bucket chromium-clang-format -s src/buildtools/linux64/clang-format.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/buildtools/linux64/clang-format exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.004427 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=linux* --no_auth --bucket chromium-gvr-static-shim -s src/third_party/gvr-android-sdk/libgvr_shim_static_arm.a.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/third_party/gvr-android-sdk/libgvr_shim_static_arm.a exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.030835 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=linux* --no_auth --bucket chromium-gvr-static-shim -s src/third_party/gvr-android-sdk/libgvr_shim_static_arm64.a.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/third_party/gvr-android-sdk/libgvr_shim_static_arm64.a exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.029728 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=linux* --no_auth --bucket chromium-gvr-static-shim -s src/third_party/gvr-android-sdk/common_library.aar.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/third_party/gvr-android-sdk/common_library.aar exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.002227 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=win32 --no_auth --bucket chromium-luci -d src/tools/luci-go/win64' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "win32", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=darwin --no_auth --bucket chromium-luci -d src/tools/luci-go/mac64' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "darwin", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=linux* --no_auth --bucket chromium-luci -d src/tools/luci-go/linux64' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/tools/luci-go/linux64/isolate exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.023809 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=linux* --no_auth --bucket chromium-eu-strip -s src/build/linux/bin/eu-strip.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/build/linux/bin/eu-strip exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.001075 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=win32 --no_auth --bucket chromium-drmemory -s src/third_party/drmemory/drmemory-windows-sfx.exe.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "win32", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/get_syzygy_binaries.py --output-dir=src/third_party/syzygy/binaries --revision=b8aa6a6d09dadd385a1afed5e71c3bb3514a4c0f --overwrite --copy-dia-binaries' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: INFO:get_syzygy_binaries.py:Output directory does not exist, skipping cleanup.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=win32 --directory --recursive --no_auth --num_threads=16 --bucket chromium-apache-win32 src/third_party/apache-win32' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "win32", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/third_party/instrumented_libraries/scripts/download_binaries.py' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/build/android/download_doclava.py' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --no_auth -u --bucket v8-wasm-fuzzer -s src/v8/test/fuzzer/wasm.tar.gz.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/v8/test/fuzzer/wasm.tar.gz exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.001132 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --no_auth -u --bucket v8-wasm-asmjs-fuzzer -s src/v8/test/fuzzer/wasm_asmjs.tar.gz.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/v8/test/fuzzer/wasm_asmjs.tar.gz exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.001171 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/tools/clang_format_merge_driver/install_git_hook.py' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/third_party/WebKit/Source/devtools/scripts/local_node/node.py --running-as-hook --version' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=linux* --extract --no_auth --bucket chromium-nodejs/6.9.4 -s src/third_party/node/linux/node-linux-x64.tar.gz.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/third_party/node/linux/node-linux-x64.tar.gz exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.024520 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=darwin --extract --no_auth --bucket chromium-nodejs/6.9.4 -s src/third_party/node/mac/node-darwin-x64.tar.gz.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "darwin", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --platform=win32 --no_auth --bucket chromium-nodejs/6.9.4 -s src/third_party/node/win/node.exe.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: The current platform doesn't match "win32", skipping.
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running 'download_from_google_storage --no_resume --extract --no_auth --bucket chromium-nodejs -s src/third_party/node/node_modules.tar.gz.sha1' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 0> File src/third_party/node/node_modules.tar.gz exists and SHA1 matches. Skipping.
chromeos-chrome-59.0.3071.94_rc-r1: Success!
chromeos-chrome-59.0.3071.94_rc-r1: Downloading 1 files took 0.005216 second(s)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 src/third_party/gvr-android-sdk/test-apks/update.py' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 build/scripts/tools/runit.py python build/scripts/common/cros_chromite.py -v' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: INFO:root:Updated 0 cache artifact(s).
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1: ________ running '/usr/bin/python2.7 build/scripts/tools/runit.py python build_internal/scripts/common_internal/cros_chromite_internal.py -v' in '/home/chrome-bot/chrome_root'
chromeos-chrome-59.0.3071.94_rc-r1: INFO:root:Updated 0 cache artifact(s).
chromeos-chrome-59.0.3071.94_rc-r1:  * GN_ARGS = is_debug=false  use_v4l2_codec=true use_v4lplugin=false use_ozone=true use_evdev_gestures=true use_xkbcommon=true linux_use_bundled_binutils=false use_debug_fission=false enable_remoting=true enable_nacl=true icu_use_data_file=true use_cras=true use_system_harfbuzz=true use_cups=true is_asan=false is_clang=true cros_host_is_clang=true clang_use_chrome_plugins=false ozone_auto_platforms=false ozone_platform_gbm=true use_system_minigbm=true use_system_libdrm=true is_chrome_branded=true is_official_build=true internal_gles2_conform_tests=true treat_warnings_as_errors=false symbol_level=2 target_sysroot="/build/samus" system_libdir="lib64" pkg_config="/build/samus/build/bin/pkg-config" target_os="chromeos" ozone_platform="gbm" target_cpu="x64" cros_target_ar="x86_64-cros-linux-gnu-ar" cros_target_cc="x86_64-cros-linux-gnu-clang -B/usr/x86_64-pc-linux-gnu/x86_64-cros-linux-gnu/binutils-bin/2.25.51-gold" cros_target_cxx="x86_64-cros-linux-gnu-clang++ -B/usr/x86_64-pc-linux-gnu/x86_64-cros-linux-gnu/binutils-bin/2.25.51-gold" host_toolchain="//build/toolchain/cros:host" custom_toolchain="//build/toolchain/cros:target" v8_snapshot_toolchain="//build/toolchain/cros:v8_snapshot" cros_target_ld="x86_64-cros-linux-gnu-clang++ -B/usr/x86_64-pc-linux-gnu/x86_64-cros-linux-gnu/binutils-bin/2.25.51-gold" cros_target_extra_cflags="-pipe -pipe -march=corei7 -Wno-unknown-warning-option " cros_target_extra_cppflags="" cros_target_extra_cxxflags="-pipe -pipe -pipe -march=corei7 -D__google_stl_debug_vector=1 -Wno-unknown-warning-option " cros_target_extra_ldflags="-Wl,-O1 -Wl,-O2 -Wl,--as-needed" cros_host_cc="clang" cros_host_cxx="clang++" cros_host_ar="x86_64-pc-linux-gnu-ar" cros_host_ld="x86_64-pc-linux-gnu-g++" cros_host_extra_cflags=" -Wno-unknown-warning-option" cros_host_extra_cxxflags=" -Wno-unknown-warning-option" cros_host_extra_cppflags="" cros_host_extra_ldflags="" cros_v8_snapshot_cc="clang" cros_v8_snapshot_cxx="clang++" cros_v8_snapshot_ar="x86_64-pc-linux-gnu-ar" cros_v8_snapshot_ld="x86_64-pc-linux-gnu-g++" cros_v8_snapshot_extra_cflags=" -Wno-unknown-warning-option" cros_v8_snapshot_extra_cxxflags=" -Wno-unknown-warning-option" cros_v8_snapshot_extra_cppflags="" cros_v8_snapshot_extra_ldflags=""
chromeos-chrome-59.0.3071.94_rc-r1: ERROR Unresolved dependencies.
chromeos-chrome-59.0.3071.94_rc-r1: //third_party/webrtc/tools:event_log_visualizer_utils(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1:   needs //build/config:exe_and_shlib_deps(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1: //third_party/webrtc/tools:frame_analyzer(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1:   needs //build/config:exe_and_shlib_deps(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1: //third_party/webrtc/tools:frame_editor(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1:   needs //build/config:exe_and_shlib_deps(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1: //third_party/webrtc/tools:psnr_ssim_analyzer(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1:   needs //build/config:exe_and_shlib_deps(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1: //third_party/webrtc/tools:reference_less_video_analysis(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1:   needs //build/config:exe_and_shlib_deps(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1: //third_party/webrtc/tools:rgba_to_i420_converter(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1:   needs //build/config:exe_and_shlib_deps(//build/toolchain/cros:target)
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1:  * ERROR: chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1::chromiumos failed (configure phase):
chromeos-chrome-59.0.3071.94_rc-r1:  *   (no error message)
chromeos-chrome-59.0.3071.94_rc-r1:  * 
chromeos-chrome-59.0.3071.94_rc-r1:  * Call stack:
chromeos-chrome-59.0.3071.94_rc-r1:  *     ebuild.sh, line  93:  Called src_configure
chromeos-chrome-59.0.3071.94_rc-r1:  *   environment, line 3770:  Called die
chromeos-chrome-59.0.3071.94_rc-r1:  * The specific snippet of code:
chromeos-chrome-59.0.3071.94_rc-r1:  *       ${EGN} gen "${CHROME_ROOT}/src/${BUILD_OUT_SYM}/${BUILDTYPE}" --args="${GN_ARGS}" --root="${CHROME_ROOT}/src" || die;
chromeos-chrome-59.0.3071.94_rc-r1:  * 
chromeos-chrome-59.0.3071.94_rc-r1:  * If you need support, post the output of `emerge --info '=chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1::chromiumos'`,
chromeos-chrome-59.0.3071.94_rc-r1:  * the complete build log and the output of `emerge -pqv '=chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1::chromiumos'`.
chromeos-chrome-59.0.3071.94_rc-r1:  * The complete build log is located at '/build/samus/tmp/portage/logs/chromeos-base:chromeos-chrome-59.0.3071.94_rc-r1:20170608-154948.log'.
chromeos-chrome-59.0.3071.94_rc-r1:  * For convenience, a symlink to the build log is located at '/build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/temp/build.log'.
chromeos-chrome-59.0.3071.94_rc-r1:  * The ebuild environment file is located at '/build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/temp/environment'.
chromeos-chrome-59.0.3071.94_rc-r1:  * Working directory: '/build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/work/chromeos-chrome-59.0.3071.94_rc'
chromeos-chrome-59.0.3071.94_rc-r1:  * S: '/build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/work/chromeos-chrome-59.0.3071.94_rc'
chromeos-chrome-59.0.3071.94_rc-r1: >>> Failed to emerge chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1 for /build/samus/, Log file:
chromeos-chrome-59.0.3071.94_rc-r1: >>>  '/build/samus/tmp/portage/logs/chromeos-base:chromeos-chrome-59.0.3071.94_rc-r1:20170608-154948.log'
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1:  * Messages for package chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1 merged to /build/samus/:
chromeos-chrome-59.0.3071.94_rc-r1: 
chromeos-chrome-59.0.3071.94_rc-r1:  * CHROME_ORIGIN VALUE is LOCAL_SOURCE
chromeos-chrome-59.0.3071.94_rc-r1:  * /home/chrome-bot/chrome_root should be set here properly
chromeos-chrome-59.0.3071.94_rc-r1:  * ERROR: chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1::chromiumos failed (configure phase):
chromeos-chrome-59.0.3071.94_rc-r1:  *   (no error message)
chromeos-chrome-59.0.3071.94_rc-r1:  * 
chromeos-chrome-59.0.3071.94_rc-r1:  * Call stack:
chromeos-chrome-59.0.3071.94_rc-r1:  *     ebuild.sh, line  93:  Called src_configure
chromeos-chrome-59.0.3071.94_rc-r1:  *   environment, line 3770:  Called die
chromeos-chrome-59.0.3071.94_rc-r1:  * The specific snippet of code:
chromeos-chrome-59.0.3071.94_rc-r1:  *       ${EGN} gen "${CHROME_ROOT}/src/${BUILD_OUT_SYM}/${BUILDTYPE}" --args="${GN_ARGS}" --root="${CHROME_ROOT}/src" || die;
chromeos-chrome-59.0.3071.94_rc-r1:  * 
chromeos-chrome-59.0.3071.94_rc-r1:  * If you need support, post the output of `emerge --info '=chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1::chromiumos'`,
chromeos-chrome-59.0.3071.94_rc-r1:  * the complete build log and the output of `emerge -pqv '=chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1::chromiumos'`.
chromeos-chrome-59.0.3071.94_rc-r1:  * The complete build log is located at '/build/samus/tmp/portage/logs/chromeos-base:chromeos-chrome-59.0.3071.94_rc-r1:20170608-154948.log'.
chromeos-chrome-59.0.3071.94_rc-r1:  * For convenience, a symlink to the build log is located at '/build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/temp/build.log'.
chromeos-chrome-59.0.3071.94_rc-r1:  * The ebuild environment file is located at '/build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/temp/environment'.
chromeos-chrome-59.0.3071.94_rc-r1:  * Working directory: '/build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/work/chromeos-chrome-59.0.3071.94_rc'
chromeos-chrome-59.0.3071.94_rc-r1:  * S: '/build/samus/tmp/portage/chromeos-base/chromeos-chrome-59.0.3071.94_rc-r1/work/chromeos-chrome-59.0.3071.94_rc'
=== Complete: job chromeos-chrome-59.0.3071.94_rc-r1 (0m8.3s) ===

looks like a failure in cros_chromite_internal.py?

I'm trying syncing to Chrome 59.0.3071.94, and seeing if I get the same errors with a "gen gen ..." (with the args listed in the build step that failed). Hopefully it does fail, and I can quickly bisect what changed between that and .93

I'll also try looking through the patches added since .93, but the bisect might be faster for me.

I didn't find any mention of a dependency bug elsewhere, so I expect this a ChromeOS specific breakage caused by some cherrypick.

I did reproduce the build error.

The list of changes to base Chrome is actually smaller than I expected, and nothing jumped out of me:

https://chromium.googlesource.com/chromium/src/+log/59.0.3071.93..59.0.3071.94?pretty=fuller&n=10000

The error message points at the webrtc build files needing something not defined in the base files. The above CL's included a DEPS roll for a large range of webrtc patches. But looking back at the DEPS roll for .93 ... .92, showed the same starting point but a different (earlier) endpoint.

The list of patches different for webrtc between .92 and .93 has length one, and does seem to be the culprit:

(diff list)
https://chromium.googlesource.com/external/webrtc/trunk/webrtc/+log/d45f54b8540f1953793026a20a828cf50d50120b..352fabe2d063ebf3d2302ac726911b3403704e8f

(CL review)
https://codereview.webrtc.org/2897523002

Reverting back https://codereview.webrtc.org/2897523002 locally makes the "gn gen ..." succeed.

I don't know the details of how webrtc changes end up in the release branch, but it looks like it depends on some other change that did not get included in base Chrome.

Sending to thomasanderson@ as he might be able to suggest a way to fix it.

Ah, a bit more searching shows there was already a revert that landed yesterday

https://codereview.webrtc.org/2927763003/

associated with crbug.com/730934

We may need to do nothing other than wait for 59.0.3071.95

Does that seem reasonable to you Grace?

I think I'm off the hook here. The GN breaking change was quickly reverted as you already discovered.