Build URL:
==========
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/precise64%20trunk/builds/21742

Log URL:
========
https://uberchromegw.corp.google.com/i/official.desktop.continuous/builders/precise64%20trunk/builds/21742/steps/compile/logs/stdio

Error from the Log:
===================
FAILED: obj/third_party/WebKit/Source/core/core_generated/MathMLNames.o 
../../third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF obj/third_party/WebKit/Source/core/core_generated/MathMLNames.o.d -DV8_DEPRECATION_WARNINGS -DUSE_UDEV -DUI_COMPOSITOR_IMAGE_TRANSPORT -DUSE_AURA=1 -DUSE_PANGO=1 -DUSE_CAIRO=1 -DUSE_GLIB=1 -DUSE_NSS_CERTS=1 -DUSE_X11=1 -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DOFFICIAL_BUILD -DGOOGLE_CHROME_BUILD -DENABLE_MEDIA_ROUTER=1 -DCR_CLANG_REVISION=\"289944-2\" -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -DNO_UNWIND_TABLES -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_FORTIFY_SOURCE=2 -DCFI_ENFORCEMENT -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DBLINK_CORE_IMPLEMENTATION=1 -DBLINK_IMPLEMENTATION=1 -DINSIDE_BLINK -DGL_GLEXT_PROTOTYPES -DUSE_GLX -DUSE_EGL -DSK_IGNORE_DW_GRAY_FIX -DSK_IGNORE_LINEONLY_AA_CONVEX_PATH_OPTS -DSK_SUPPORT_GPU=1 -DENABLE_LAYOUT_UNIT_IN_INLINE_BOXES=0 -DENABLE_OILPAN=1 -DWTF_USE_CONCATENATED_IMPULSE_RESPONSES=1 -DWTF_USE_WEBAUDIO_FFMPEG=1 -DWTF_USE_DEFAULT_RENDER_THEME=1 -DU_USING_ICU_NAMESPACE=0 -DU_ENABLE_DYLOAD=0 -DU_STATIC_IMPLEMENTATION -DICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_FILE -DLIBXSLT_STATIC -Igen/blink -I../.. -Igen -I../../third_party/WebKit/Source -I../../third_party/WebKit -Igen/blink -Igen/third_party/WebKit -I../../third_party/WebKit/Source -Igen/blink -I../../third_party/khronos -I../../gpu -I../../build/linux/debian_wheezy_amd64-sysroot/usr/include/glib-2.0 -I../../build/linux/debian_wheezy_amd64-sysroot/usr/lib/x86_64-linux-gnu/glib-2.0/include -I../../third_party/libwebp -I../../skia/config -I../../skia/ext -I../../third_party/skia/include/c -I../../third_party/skia/include/config -I../../third_party/skia/include/core -I../../third_party/skia/include/effects -I../../third_party/skia/include/images -I../../third_party/skia/include/lazy -I../../third_party/skia/include/pathops -I../../third_party/skia/include/pdf -I../../third_party/skia/include/pipe -I../../third_party/skia/include/ports -I../../third_party/skia/include/utils -I../../third_party/skia/include/gpu -I../../third_party/skia/src/gpu -I../../third_party/skia/src/sksl -I../../third_party/icu/source/common -I../../third_party/icu/source/i18n -I../../third_party/angle/include -I../../third_party/angle/src/common/third_party/numerics -Igen/angle -I../../third_party/iccjpeg -I../../third_party/libpng -I../../third_party/zlib -I../../third_party/libxml/src/include -I../../third_party/libxml/linux/include -I../../third_party/libxslt -I../../third_party/ots/include -I../../third_party/snappy/src -I../../third_party/snappy/linux -I../../v8/include -Igen/v8/include -fno-strict-aliasing --param=ssp-buffer-size=4 -fstack-protector -fno-unwind-tables -fno-asynchronous-unwind-tables -fPIC -pipe -B../../third_party/binutils/Linux_x64/Release/bin -fcolor-diagnostics -fdebug-prefix-map=/b/build/slave/precise64_trunk/build/src=. -flto -fwhole-program-vtables -m64 -march=x86-64 -pthread -Wall -Werror -Wextra -Wno-missing-field-initializers -Wno-unused-parameter -Wno-c++11-narrowing -Wno-covered-switch-default -Wno-deprecated-register -Wno-unneeded-internal-declaration -Wno-inconsistent-missing-override -Wno-shift-negative-value -Wno-undefined-var-template -Wno-nonportable-include-path -Wno-address-of-packed-member -O2 -fno-ident -fdata-sections -ffunction-sections -g2 --sysroot=../../build/linux/debian_wheezy_amd64-sysroot -fsanitize=cfi-vcall -fsanitize-blacklist=../../tools/cfi/blacklist.txt -fvisibility=hidden -Xclang -load -Xclang ../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.so -Xclang -add-plugin -Xclang find-bad-constructs -Xclang -plugin-arg-find-bad-constructs -Xclang check-ipc -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -Wexit-time-destructors -Xclang -load -Xclang ../../third_party/llvm-build/Release+Asserts/lib/libBlinkGCPlugin.so -Xclang -add-plugin -Xclang blink-gc-plugin -Wglobal-constructors -DLIBXML_STATIC= -fvisibility-inlines-hidden -std=gnu++11 -fno-rtti -fno-exceptions -c gen/blink/core/MathMLNames.cpp -o obj/third_party/WebKit/Source/core/core_generated/MathMLNames.o
clang: error: no such file or directory: 'gen/blink/core/MathMLNames.cpp'
clang: error: no input files
[39045/47082] CXX obj/third_party/WebKit/Source/core/core_generated/HTMLElementLookupTrie.o
[39046/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8Navigator.o
[39047/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/MojoWatchCallback.o
[39048/47082] CXX obj/third_party/WebKit/Source/core/core_generated/HTMLNames.o
[39049/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8AudioTrack.o
[39050/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/PerformanceObserverCallback.o
[39051/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8XMLHttpRequest.o
[39052/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8XSLTProcessor.o
[39053/47082] CXX obj/third_party/WebKit/Source/core/core_generated/ScriptFunction.o
[39054/47082] CXX obj/third_party/WebKit/Source/core/core_generated/HTMLEntityTable.o
[39055/47082] CXX obj/third_party/WebKit/Source/core/core_generated/InputModeNames.o
[39056/47082] CXX obj/third_party/WebKit/Source/core/core_generated/HTMLTokenizerNames.o
[39057/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8URL.o
[39058/47082] CXX obj/third_party/WebKit/Source/core/core_generated/InputTypeNames.o
[39059/47082] CXX obj/third_party/WebKit/Source/core/core_generated/MediaFeatureNames.o
[39060/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8DevToolsHost.o
[39061/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8VideoTrack.o
[39062/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8WorkerNavigator.o
[39063/47082] CXX obj/third_party/WebKit/Source/core/core_generated/ScheduledAction.o
[39064/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8OffscreenCanvas.o
[39065/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8HTMLVideoElement.o
[39066/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8HTMLIFrameElement.o
[39067/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8DedicatedWorkerGlobalScope.o
[39068/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8WorkerGlobalScope.o
[39069/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8HTMLMediaElement.o
[39070/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8HTMLCanvasElement.o
[39071/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8SharedWorkerGlobalScope.o
[39072/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8HTMLInputElement.o
[39073/47082] CXX obj/third_party/WebKit/Source/core/core_generated/HTMLElementFactory.o
[39074/47082] CXX obj/third_party/WebKit/Source/bindings/core/v8/bindings_core_impl/V8Window.o
[39075/47082] LINK ./mus_demo_unittests
[39076/47082] LINK ./test_wm.service
[39077/47082] LINK ./mus_ws_unittests
ninja: build stopped: subcommand failed.
step returned non-zero exit code: 1
@@@STEP_FAILURE@@@

Suspecting below change could be a possible suspect

https://chromium.googlesource.com/chromium/src/+/013b234ed4fc6fd9a999bc2bd5f156a17c810356

@ ktyliu: Assigning to you, kindly take a look into it. Please help us to find an owner if not with respect to your change.

Thanks.!