Filed by sheriff-o-matic@appspot.gserviceaccount.com on behalf of jdoerrie@chromium.org

compile failure on Fuchsia Cast Audio
Builders failed on: 
- Fuchsia x64 Cast Audio: 
  https://build.chromium.org/p/chromium.linux/builders/Fuchsia%20x64%20Cast%20Audio

-  Fuchsia ARM64 Cast Audio:
  https://ci.chromium.org/buildbot/chromium.linux/Fuchsia%20ARM64%20Cast%20Audio/

Error Snippet:
[391/403] LINK ./cast_shell_unittests__exec
FAILED: cast_shell_unittests__exec exe.unstripped/cast_shell_unittests__exec 
python "../../build/toolchain/gcc_link_wrapper.py" --output="./cast_shell_unittests__exec" --strip="../../third_party/eu-strip/bin/eu-strip" --unstripped-file="./exe.unstripped/cast_shell_unittests__exec" -- ../../third_party/llvm-build/Release+Asserts/bin/clang++ -fPIC -Wl,-z,noexecstack -Wl,-z,now -Wl,-z,relro -Wl,-z,defs -Wl,--no-as-needed -lpthread -Wl,--as-needed -fuse-ld=lld -Wl,--icf=all --target=x86_64-fuchsia -resource-dir ../../third_party/fuchsia-sdk/toolchain_libs/clang/7.0.0 -Wl,-z,stack-size=0x800000 -Wl,--no-as-needed -lfdio -Wl,--as-needed -m64 -Werror -Wl,-O2 -Wl,--gc-sections -Wl,--fatal-warnings -nostdlib++ --sysroot=../../third_party/fuchsia-sdk/sysroot/x86_64-fuchsia -o "./exe.unstripped/cast_shell_unittests__exec" -Wl,--start-group @"./cast_shell_unittests__exec.rsp" ./libcast_graphics_1.0.so -Wl,--end-group   -lzircon -llaunchpad -lmedia_client 
/b/c/b/linux/src/out/Release/../../third_party/llvm-build/Release+Asserts/bin/ld.lld: error: undefined symbol: chromecast::media::VideoDecoderForMixer::Create(chromecast::media::MediaPipelineDeviceParams const&)
>>> referenced by media_pipeline_backend_for_mixer.cc
>>>               obj/chromecast/media/cma/backend/for_mixer_audio/media_pipeline_backend_for_mixer.o:(chromecast::media::MediaPipelineBackendForMixer::CreateVideoDecoder())
clang: error: ld.lld command failed with exit code 1 (use -v to see invocation)