The new version of gpu fuzzer (https://codereview.chromium.org/2541843004/) added recently breaks Mac build (https://build.chromium.org/p/chromium.fyi/builders/Libfuzzer%20Upload%20Mac%20ASan):


[675/5399] LINK ./gpu_fuzzer_angle
FAILED: gpu_fuzzer_angle gpu_fuzzer_angle.dSYM gpu_fuzzer_angle.dSYM/Contents/Info.plist gpu_fuzzer_angle.dSYM/Contents/Resources/DWARF/gpu_fuzzer_angle 
export DEVELOPER_DIR=/b/build/slave/Libfuzzer_Upload_Mac_ASan/build/src/build/mac_files/Xcode.app;  TOOL_VERSION=1477669400 ../../build/toolchain/mac/linker_driver.py ../../third_party/llvm-build/Release+Asserts/bin/clang++  -Wcrl,dsym,.  -stdlib=libc++ -arch x86_64 -Werror -Wl,-dead_strip -isysroot /b/build/slave/Libfuzzer_Upload_Mac_ASan/build/src/build/mac_files/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -mmacosx-version-min=10.9 -fsanitize=address -fsanitize-coverage=edge,indirect-calls,8bit-counters -Wl,-ObjC -Wl,-pie -Wl,-U,_LLVMFuzzerCustomMutator -Wl,-U,_LLVMFuzzerInitialize -Wl,-U,_sanitizer_options_link_helper -fsanitize=address -fsanitize-coverage=edge,indirect-calls,8bit-counters -stdlib=libc++ -L. -L../../build/mac_files/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/lib -o "./gpu_fuzzer_angle" -Wl,-filelist,"./gpu_fuzzer_angle.rsp" ./libc++.dylib -framework ApplicationServices -framework AppKit -lbsm -framework CoreFoundation -framework IOKit -framework Security -framework IOSurface -framework OpenGL -framework Quartz -framework CoreGraphics -framework CoreText -framework Foundation -framework Accelerate -framework AudioUnit -framework Carbon -framework CoreVideo -framework CFNetwork -framework CoreServices -framework SystemConfiguration -lresolv -framework QuartzCore -framework AVFoundation -framework CoreMedia
Undefined symbols for architecture x86_64:
  "gl::PbufferGLSurfaceEGL::PbufferGLSurfaceEGL(gfx::Size const&)", referenced from:
      gpu::(anonymous namespace)::CommandBufferSetup::CommandBufferSetup() in fuzzer_main.o
  "gl::GLContextEGL::GLContextEGL(gl::GLShareGroup*)", referenced from:
      gpu::(anonymous namespace)::CommandBufferSetup::CommandBufferSetup() in fuzzer_main.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Traceback (most recent call last):
  File "../../build/toolchain/mac/linker_driver.py", line 229, in <module>
    Main(sys.argv)
  File "../../build/toolchain/mac/linker_driver.py", line 79, in Main
    subprocess.check_call(compiler_driver_args)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 540, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['../../third_party/llvm-build/Release+Asserts/bin/clang++', '-stdlib=libc++', '-arch', 'x86_64', '-Werror', '-Wl,-dead_strip', '-isysroot', '/b/build/slave/Libfuzzer_Upload_Mac_ASan/build/src/build/mac_files/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk', '-mmacosx-version-min=10.9', '-fsanitize=address', '-fsanitize-coverage=edge,indirect-calls,8bit-counters', '-Wl,-ObjC', '-Wl,-pie', '-Wl,-U,_LLVMFuzzerCustomMutator', '-Wl,-U,_LLVMFuzzerInitialize', '-Wl,-U,_sanitizer_options_link_helper', '-fsanitize=address', '-fsanitize-coverage=edge,indirect-calls,8bit-counters', '-stdlib=libc++', '-L.', '-L../../build/mac_files/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/lib', '-o', './gpu_fuzzer_angle', '-Wl,-filelist,./gpu_fuzzer_angle.rsp', './libc++.dylib', '-framework', 'ApplicationServices', '-framework', 'AppKit', '-lbsm', '-framework', 'CoreFoundation', '-framework', 'IOKit', '-framework', 'Security', '-framework', 'IOSurface', '-framework', 'OpenGL', '-framework', 'Quartz', '-framework', 'CoreGraphics', '-framework', 'CoreText', '-framework', 'Foundation', '-framework', 'Accelerate', '-framework', 'AudioUnit', '-framework', 'Carbon', '-framework', 'CoreVideo', '-framework', 'CFNetwork', '-framework', 'CoreServices', '-framework', 'SystemConfiguration', '-lresolv', '-framework', 'QuartzCore', '-framework', 'AVFoundation', '-framework', 'CoreMedia']' returned non-zero exit status 1