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Issue 123421 Support decryption of audio (in addition to video)
Starred by 4 users Project Member Reported by ddorwin@chromium.org, Apr 13 2012 Back to list
Status: Fixed
Owner:
Closed: Dec 2012
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 2
Type: Bug

Blocked on:
issue 130693

Blocking:
issue 125398
issue 165315



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Access to the decrypter for video was exposed to WebMediaPlayerImpl via the WebMediaPlayerProxy as part of issue 117063. We need to be able to access add keys, etc. for the audio as well.

This may involve abstracting the decrypter so we don't have to access it via the decoder and maybe sharing a single decrypter pointer for all streams/decoders in a given media element.
 
Blocking: 123254
Status: Assigned
Blocking: -123254
Blocking: 125398
Blockedon: 130693
Blockedon: -chromium:130693 chromium:130693
Blocking: -chromium:125398 chromium:125398
Labels: -Feature-Media Feature-Media-Encrypted
Project Member Comment 7 by bugdroid1@chromium.org, Oct 12 2012
The following revision refers to this bug:
    http://src.chromium.org/viewvc/chrome?view=rev&revision=161465

------------------------------------------------------------------------
r161465 | xhwang@chromium.org | 2012-10-12T01:04:33.724144Z

Changed paths:
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/webm/webm_cluster_parser.h?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/audio_decoder_config.cc?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/audio_decoder_config.h?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/mp4/mp4_stream_parser.cc?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/webm/webm_tracks_parser.cc?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/chunk_demuxer_unittest.cc?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/webm/webm_tracks_parser.h?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/webm/webm_stream_parser.cc?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/webm/webm_stream_parser.h?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/ffmpeg/ffmpeg_common.cc?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/webm/webm_cluster_parser_unittest.cc?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/ffmpeg_audio_decoder_unittest.cc?r1=161465&r2=161464&pathrev=161465
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/webm/webm_cluster_parser.cc?r1=161465&r2=161464&pathrev=161465

Support encrypted audio stream in demuxer.

BUG= 123421 
TEST=updated media_unittest


Review URL: https://chromiumcodereview.appspot.com/11088047
------------------------------------------------------------------------
Project Member Comment 8 by bugdroid1@chromium.org, Oct 18 2012
The following revision refers to this bug:
    http://src.chromium.org/viewvc/chrome?view=rev&revision=162768

------------------------------------------------------------------------
r162768 | xhwang@chromium.org | 2012-10-18T20:05:42.442262Z

Changed paths:
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi_decryptor.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi_decryptor.h?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/proxy_decryptor_unittest.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/proxy_decryptor.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/crypto/aes_decryptor_unittest.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/crypto/aes_decryptor.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/proxy_decryptor.h?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/crypto/aes_decryptor.h?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/ffmpeg_video_decoder_unittest.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/decryptor.h?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/ffmpeg_video_decoder.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_video_decoder_unittest.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/mock_filters.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_video_decoder.cc?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/mock_filters.h?r1=162768&r2=162767&pathrev=162768
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi/clear_key_cdm.cc?r1=162768&r2=162767&pathrev=162768

Update Decryptor interface to support audio decoding.

We were discussing the use of
decryptor_->DeinitializeDecoder(Decryptor::kVideo);
  - vs -
decryptor_->DeinitializeVideoDecoder();

I choose to use parameterized methods so that we have less code (duplication). The non-parameterized methods are cleaner for callers. But I feel the former is slightly better in general.

Later on we'll have two Decryptors (ProxyDecryptor will not be a Decryptor anymore):
1) AesDecryptor, which doesn't care the stream type at all, not even for CancelDecrypt().
2) PpapiDecryptor, which merely passes similar calls to the PluginInstance which then make similar PPP calls. It seems to me that for passing calls it's slightly cleaner to use parameterized methods. Also we have parameterized PPP calls already for the same reason (less functions through multiple layers).

So in both cases, using parameterized methods results in less code.

It's unfortunate that InitializeXXXDecoder and DecryptAndDecodeXXX are exceptions, due to different types they take/return.

BUG= 123421 
TEST=media_unittest, content_unittest

Review URL: https://chromiumcodereview.appspot.com/11144036
------------------------------------------------------------------------
Labels: Mstone-24
Project Member Comment 11 by bugdroid1@chromium.org, Oct 24 2012
The following revision refers to this bug:
    http://src.chromium.org/viewvc/chrome?view=rev&revision=163931

------------------------------------------------------------------------
r163931 | xhwang@chromium.org | 2012-10-24T22:33:54.447739Z

Changed paths:
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_audio_decoder_unittest.cc?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_audio_decoder.cc?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/decryptor.h?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi_decryptor.cc?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/plugins/ppapi/ppapi_plugin_instance.cc?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/plugins/ppapi/ppapi_plugin_instance.h?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi/clear_key_cdm.cc?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi/content_decryption_module.h?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi/cdm_wrapper.cc?r1=163931&r2=163930&pathrev=163931
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi/clear_key_cdm.h?r1=163931&r2=163930&pathrev=163931

Update PluginInstance for audio support for content decryption.

BUG= 123421 
TEST=none


Review URL: https://chromiumcodereview.appspot.com/11189082
------------------------------------------------------------------------
can this be marked as fixed or is there still work to do?
Status: Started
Decrypt-and-decode of audio is done now. But we still need to enable the decrypt-only path for audio.
Labels: -Mstone-24 Mstone-25
To clarify, Decrypt-and-decode of audio is done in M24. Decrypt-only for audio is targeting M25.
Project Member Comment 15 by bugdroid1@chromium.org, Nov 2 2012
The following revision refers to this bug:
    http://src.chromium.org/viewvc/chrome?view=rev&revision=165792

------------------------------------------------------------------------
r165792 | xhwang@chromium.org | 2012-11-02T23:04:03.172115Z

Changed paths:
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/crypto/aes_decryptor.cc?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/proxy_decryptor.h?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/crypto/aes_decryptor.h?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_audio_decoder_unittest.cc?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_audio_decoder.cc?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/decryptor.h?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi_decryptor.cc?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_video_decoder_unittest.cc?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/mock_filters.cc?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_video_decoder.cc?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/ppapi_decryptor.h?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/mock_filters.h?r1=165792&r2=165791&pathrev=165792
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/proxy_decryptor.cc?r1=165792&r2=165791&pathrev=165792

Add RegisterKeyAddedCB in Decryptor interface.

Previously KeyAddedCB is registered with InitializeXXXDecoder calls. Generalize this to a separate RegisterKeyAddedCB call so that we can also support the decrypt-only path.

BUG= 123421 
TEST=media_unittests passes. EME demo page still works.

Review URL: https://chromiumcodereview.appspot.com/11348056
------------------------------------------------------------------------
Project Member Comment 16 by bugdroid1@chromium.org, Nov 15 2012
The following revision refers to this bug:
    http://src.chromium.org/viewvc/chrome?view=rev&revision=167852

------------------------------------------------------------------------
r167852 | xhwang@chromium.org | 2012-11-15T03:57:58.364334Z

Changed paths:
   A http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_demuxer_stream_unittest.cc?r1=167852&r2=167851&pathrev=167852
   A http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_demuxer_stream.cc?r1=167852&r2=167851&pathrev=167852
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_audio_decoder_unittest.cc?r1=167852&r2=167851&pathrev=167852
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_audio_decoder.cc?r1=167852&r2=167851&pathrev=167852
   A http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_demuxer_stream.h?r1=167852&r2=167851&pathrev=167852
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/base/decryptor.h?r1=167852&r2=167851&pathrev=167852
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_audio_decoder.h?r1=167852&r2=167851&pathrev=167852
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/media.gyp?r1=167852&r2=167851&pathrev=167852
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_video_decoder_unittest.cc?r1=167852&r2=167851&pathrev=167852
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_video_decoder.cc?r1=167852&r2=167851&pathrev=167852
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/decrypting_video_decoder.h?r1=167852&r2=167851&pathrev=167852

Add DecryptingDemuxerStream.

DecryptingDemuxerStream transforms an encrypted demuxer stream into a clear demuxer stream with the same stream type (audio/video) and codec config. It may be blocking because it relies on a Decryptor for decryption. Thus other than implementing the DemuxerStream interface, it also exposes a Reset() methods so that caller can cancel the decryption operation.

BUG= 123421 , 141786 
TEST=media_unittests pass

Review URL: https://chromiumcodereview.appspot.com/11342031
------------------------------------------------------------------------
Project Member Comment 17 by bugdroid1@chromium.org, Dec 10 2012
The following revision refers to this bug:
    http://src.chromium.org/viewvc/chrome?view=rev&revision=172175

------------------------------------------------------------------------
r172175 | ddorwin@chromium.org | 2012-12-10T23:17:47.946261Z

Changed paths:
   A http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/key_systems_unittest.cc?r1=172175&r2=172174&pathrev=172175
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/key_systems.cc?r1=172175&r2=172174&pathrev=172175
   M http://src.chromium.org/viewvc/chrome/trunk/src/content/content_tests.gypi?r1=172175&r2=172174&pathrev=172175

Several updates to canPlayType() results for EME

1) Disable audio codecs for Clear Key until decrypt-only is supported for audio (http://crbug.com/123421).
2) Manually support specific key system parents until http://crbug.com/164303 is fixed.
3) Report Widevine CENC support if available.

TEST=new unit tests; manually running canPlayType() queries


Review URL: https://chromiumcodereview.appspot.com/11474037
------------------------------------------------------------------------
Blocking: chromium:165315
Project Member Comment 19 by bugdroid1@chromium.org, Dec 14 2012
The following revision refers to this bug:
    http://src.chromium.org/viewvc/chrome?view=rev&revision=173235

------------------------------------------------------------------------
r173235 | xhwang@chromium.org | 2012-12-14T22:51:35.940408Z

Changed paths:
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/key_systems_unittest.cc?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/crypto/key_systems.cc?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/pipeline_integration_test_base.cc?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/media.gyp?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/tools/player_x11/player_x11.cc?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/content/browser/encrypted_media_browsertest.cc?r1=173235&r2=173234&pathrev=173235
   A http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/audio_decoder_selector_unittest.cc?r1=173235&r2=173234&pathrev=173235
   A http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/audio_decoder_selector.cc?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/audio_renderer_impl_unittest.cc?r1=173235&r2=173234&pathrev=173235
   A http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/audio_decoder_selector.h?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/audio_renderer_impl.cc?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/webmediaplayer_impl.cc?r1=173235&r2=173234&pathrev=173235
   M http://src.chromium.org/viewvc/chrome/trunk/src/media/filters/audio_renderer_impl.h?r1=173235&r2=173234&pathrev=173235

Encrypted Media: Support Audio Decrypt-Only.

- Add AudioDecoderSelector to facilitate AudioDecoder selection.
- Add AudioDecoderSelectorTest.
- Update key_system.cc to support audio in clearkey key system.
- Update content_browsertests to test audio decrypt-only.

BUG= 123421 
TEST=both decrypt-only and decrypt-and-decode works for audio!

Review URL: https://codereview.chromium.org/11492003
------------------------------------------------------------------------
Status: Fixed
8 CLs and finally it's fixed!
Project Member Comment 21 by bugdroid1@chromium.org, Dec 15 2012
The following revision refers to this bug:
    http://src.chromium.org/viewvc/chrome?view=rev&revision=173283

------------------------------------------------------------------------
r173283 | xhwang@chromium.org | 2012-12-15T06:45:39.446857Z

Changed paths:
   M http://src.chromium.org/viewvc/chrome/trunk/src/webkit/media/filter_helpers.cc?r1=173283&r2=173282&pathrev=173283

Encrypted Media: Remove DecryptingAudioDecoder from default decoder list.

This change is missed from r173235. The original CL was still working well since DecryptingAudioDecoder cannot decrypt any clear streams.

BUG= 123421 
TEST=all tests still pass

Review URL: https://codereview.chromium.org/11576047
------------------------------------------------------------------------
Status: Started
I suspect that content_browsertests started hanging after these CLs
http://build.chromium.org/p/chromium.memory/builders/Linux%20ASAN%20Tests%20(3)

http://build.chromium.org/p/chromium.memory/builders/Linux%20ASAN%20Tests%20%283%29/builds/1232/steps/content_browsertests/logs/stdio
Note: Google Test filter = Http/MediaTest.VideoBearWavPcm3kHz/0
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.

command timed out: 600 seconds without output, attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=939.675996

http://build.chromium.org/p/chromium.memory/builders/Linux%20ASAN%20Tests%20%283%29/builds/1173/steps/content_browsertests/logs/stdio
Note: Google Test filter = File/MediaTest.VideoTulipWebm/0
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from File/MediaTest
[ RUN      ] File/MediaTest.VideoTulipWebm/0
[6256:6256:1213/222427:1680374461:ERROR:zygote_host_impl_linux.cc(146)] Running without the SUID sandbox! See https://code.google.com/p/chromium/wiki/LinuxSUIDSandboxDevelopment for more information on developing with the sandbox on.

command timed out: 600 seconds without output, attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=939.571171


http://build.chromium.org/p/chromium.memory/builders/Linux%20ASAN%20Tests%20%283%29/builds/1230/steps/content_browsertests/logs/stdio
Note: Google Test filter = ClearKey/EncryptedMediaTest.MAYBE(BasicPlayback_VideoAudio)/0
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from ClearKey/EncryptedMediaTest
[ RUN      ] ClearKey/EncryptedMediaTest.MAYBE(BasicPlayback_VideoAudio)/0
[6331:6331:1215/173300:1693954064:ERROR:zygote_host_impl_linux.cc(146)] Running without the SUID sandbox! See https://code.google.com/p/chromium/wiki/LinuxSUIDSandboxDevelopment for more information on developing with the sandbox on.
[6331:6345:1215/173300:1694016563:WARNING:proxy_service.cc(885)] PAC support disabled because there is no system implementation
HTTP server started on 127.0.0.1:44045...
sending server_data: {"host": "127.0.0.1", "port": 44045} (36 bytes)
[6356:6356:1215/173301:1694503518:ERROR:gl_surface_glx.cc(384)] GLX 1.3 or later is required.
[6356:6356:1215/173301:1694503588:ERROR:gl_surface_linux.cc(58)] GLSurfaceGLX::InitializeOneOff failed.
[6331:6331:1215/173301:1694585487:INFO:CONSOLE(89)] "onSourceOpen", source: http://127.0.0.1:44045/files/media/encrypted_media_utils.js (89)
[6331:6331:1215/173301:1694604267:INFO:CONSOLE(106)] "onNeedKey", source: http://127.0.0.1:44045/files/media/encrypted_media_utils.js (106)
[6331:6331:1215/173301:1694608933:INFO:CONSOLE(149)] "onKeyMessage - key request", source: http://127.0.0.1:44045/files/media/encrypted_media_utils.js (149)
[       OK ] ClearKey/EncryptedMediaTest.MAYBE(BasicPlayback_VideoAudio)/0 (3550 ms)
[----------] 1 test from ClearKey/EncryptedMediaTest (3550 ms total)

command timed out: 600 seconds without output, attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=958.191736

Could you please take a look?
Status: Fixed
Those timeouts happen before and after r173235. So I don't think r173235 "introduced" the timeout.

Before r173235:
http://build.chromium.org/p/chromium.memory/builders/Linux%20ASAN%20Tests%20%283%29/builds/1195/steps/content_browsertests/logs/stdio

After r173235:
http://build.chromium.org/p/chromium.memory/builders/Linux%20ASAN%20Tests%20%283%29/builds/1196/steps/content_browsertests/logs/stdio

That said, those timeouts should be addressed. I've filed a new issue on that:
http://code.google.com/p/chromium/issues/detail?id=166528

I'll mark this issue as fixed.
Project Member Comment 24 by bugdroid1@chromium.org, Mar 10 2013
Labels: -Area-WebKit -Feature-Media-Encrypted -Mstone-25 Cr-Content M-25 Cr-Internals-Media-Encrypted
Project Member Comment 25 by bugdroid1@chromium.org, Apr 6 2013
Labels: -Cr-Content Cr-Blink
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