FAILED: obj/chrome/browser/ui/ui/tab_window_controller.o 
/Users/erikchen/goma/gomacc ../../third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF obj/chrome/browser/ui/ui/tab_window_controller.o.d -DV8_DEPRECATION_WARNINGS -DENABLE_NOTIFICATIONS -DENABLE_PEPPER_CDMS -DENABLE_PLUGINS=1 -DENABLE_PDF=1 -DENABLE_PRINTING=1 -DENABLE_BASIC_PRINTING=1 -DENABLE_PRINT_PREVIEW=1 -DENABLE_SPELLCHECK=1 -DUSE_BROWSER_SPELLCHECKER=1 -DNO_TCMALLOC -DUSE_EXTERNAL_POPUP_MENU=1 -DENABLE_WEBRTC=1 -DENABLE_EXTENSIONS=1 -DENABLE_TASK_MANAGER=1 -DENABLE_THEMES=1 -DENABLE_CAPTIVE_PORTAL_DETECTION=1 -DENABLE_SESSION_SERVICE=1 -DENABLE_PLUGIN_INSTALLATION=1 -DENABLE_SUPERVISED_USERS=1 -DENABLE_SERVICE_DISCOVERY=1 -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DCHROMIUM_BUILD -DENABLE_MEDIA_ROUTER=1 -DFIELDTRIAL_TESTING_ENABLED -DCR_CLANG_REVISION=282097-1 -DCR_XCODE_VERSION=0720 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORE=0 -D_DEBUG -DDYNAMIC_ANNOTATIONS_ENABLED=1 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-I../../third_party/khronos -I../../gpu -I../../third_party/protobuf/src -Igen/protoc_out -I../../third_party/protobuf/src -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 -Igen -I../../third_party/icu/source/common -I../../third_party/icu/source/i18n -Igen/ui/views/resources -Igen/chrome -Igen/chrome -Igen/chrome -Igen/chrome -I../../third_party/ced/src -Igen/components/strings -Igen/components/strings -Igen/components/strings -Igen/components/strings -I../../third_party/WebKit -Igen/third_party/WebKit -I../../v8/include -Igen/v8/include -I../../v8/include -Igen/v8/include -I../../third_party/libwebm/source -I../../third_party/opus/src/include -I../../third_party/boringssl/src/include -I../../third_party/re2/src -I../../third_party/mesa/src/include -Igen/ui/resources -Igen/ui/resources -Igen -Igen/extensions -Igen/extensions -Igen/extensions -Igen -Igen/extensions/strings -I../../third_party/google_toolbox_for_mac -I../../third_party/google_toolbox_for_mac/src -I../../third_party/google_toolbox_for_mac/src/AppKit -I../../third_party/google_toolbox_for_mac/src/DebugUtils -I../../third_party/google_toolbox_for_mac/src/Foundation -I../../third_party/cacheinvalidation/overrides -I../../third_party/cacheinvalidation/src -I../../third_party/leveldatabase -I../../third_party/leveldatabase/src -I../../third_party/leveldatabase/src/include -Igen/components -Igen/components -I../../third_party/webrtc_overrides -I../../testing/gtest/include -I../../third_party -I../../third_party/webrtc_overrides -I../../third_party -I../../third_party/expat/files/lib -I../../third_party/zlib -I../../third_party/libaddressinput/src/cpp/include -I../../third_party/libaddressinput/chromium/override -Igen/third_party/libaddressinput -Igen -fno-strict-aliasing -fstack-protector-strong -fcolor-diagnostics -arch x86_64 -Wall -Werror -Wextra -Wpartial-availability -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 -O0 -g1 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -mmacosx-version-min=10.9 -fvisibility=hidden -Xclang -load -Xclang ../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.dylib -Xclang -add-plugin -Xclang find-bad-constructs -Wheader-hygiene -Wstring-conversion -Wno-nonnull -Wexit-time-destructors -Wno-unused-function -fno-threadsafe-statics -fvisibility-inlines-hidden -Wno-undefined-bool-conversion -Wno-tautological-undefined-compare -std=c++11 -stdlib=libc++ -fobjc-call-cxx-cdtors -Wobjc-missing-property-synthesis -fno-rtti -fno-exceptions -c ../../chrome/browser/ui/cocoa/tabs/tab_window_controller.mm -o obj/chrome/browser/ui/ui/tab_window_controller.o
../../chrome/browser/ui/cocoa/tabs/tab_window_controller.mm:375:25: error: 'NSVisualEffectView' is only available on macOS 10.10 or newer [-Werror,-Wunguarded-availability]
  base::scoped_nsobject<NSVisualEffectView> visualEffectView(
                        ^~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/System/Library/Frameworks/AppKit.framework/Headers/NSVisualEffectView.h:39:12: note: 'NSVisualEffectView' has been explicitly marked partial here
@interface NSVisualEffectView : NSView {
           ^
../../chrome/browser/ui/cocoa/tabs/tab_window_controller.mm:375:25: note: enclose 'NSVisualEffectView' in an @available check to silence this warning
  base::scoped_nsobject<NSVisualEffectView> visualEffectView(
                        ^~~~~~~~~~~~~~~~~~
1 error generated.