Reland "Letting Flash join MediaSession (stack implementaion)"

Reland "Letting Flash join MediaSession (stack implementaion)"

This CL lets Flash join and be managed by MediaSession.
Flash will take "Gain" audio focus, and sessions with Flash will duck instead of being suspended.

Test flags:
--enable-default-media-session
--ppapi-flash-path=/opt/google/chrome/PepperFlash/libpepflashplayer.so
--enable-features=flash-join-media-session

Test URL (can open multiple tabs and try):
http://xxyzzzq.github.io/sandbox/media-session/flash-test.html

BUG=619084
TBR=avayvod@chromium.org,jochen@chromium.org,mlamouri@chromium.org

Committed: https://crrev.com/d36b5ce262564de9bf0fee7697a16e5a655472b4
Cr-Commit-Position: refs/heads/master@{#422142}

[Zhiqiang Zhang (Slow), 2016-09-30 15:38:12]

The reason for the previous failure on the bots is actually:

DCHECK(RequestSystemAudioFocus(AudioFocusManager::AudioFocusType::Gain));

which should be:

bool success = RequestSystemAudioFocus(
    AudioFocusManager::AudioFocusType::Gain);
DCHECK(success);


It's sad that the try servers don't run debug build :(

I'm relanding this CL now.

[Zhiqiang Zhang (Slow), 2016-09-30 15:38:16]

The CQ bit was checked by zqzhang@chromium.org

[commit-bot: I haz the power, 2016-09-30 15:38:40]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[Zhiqiang Zhang (Slow), 2016-09-30 15:42:30]

On 2016/09/30 15:38:12, Zhiqiang Zhang wrote:
> 
> It's sad that the try servers don't run debug build :(

I mean the try servers don't run tests on release build.

[commit-bot: I haz the power, 2016-09-30 17:29:59]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-30 17:33:18]

Description was changed from

==========
Reland "Letting Flash join MediaSession (stack implementaion)"

This CL lets Flash join and be managed by MediaSession.
Flash will take "Gain" audio focus, and sessions with Flash will duck instead of
being suspended.

Test flags:
--enable-default-media-session
--ppapi-flash-path=/opt/google/chrome/PepperFlash/libpepflashplayer.so
--enable-features=flash-join-media-session

Test URL (can open multiple tabs and try):
http://xxyzzzq.github.io/sandbox/media-session/flash-test.html

BUG=619084
TBR=avayvod@chromium.org,jochen@chromium.org,mlamouri@chromium.org
==========

to

==========
Reland "Letting Flash join MediaSession (stack implementaion)"

This CL lets Flash join and be managed by MediaSession.
Flash will take "Gain" audio focus, and sessions with Flash will duck instead of
being suspended.

Test flags:
--enable-default-media-session
--ppapi-flash-path=/opt/google/chrome/PepperFlash/libpepflashplayer.so
--enable-features=flash-join-media-session

Test URL (can open multiple tabs and try):
http://xxyzzzq.github.io/sandbox/media-session/flash-test.html

BUG=619084
TBR=avayvod@chromium.org,jochen@chromium.org,mlamouri@chromium.org

Committed: https://crrev.com/d36b5ce262564de9bf0fee7697a16e5a655472b4
Cr-Commit-Position: refs/heads/master@{#422142}
==========

[commit-bot: I haz the power, 2016-09-30 17:33:19]

Patchset 1 (id:??) landed as
https://crrev.com/d36b5ce262564de9bf0fee7697a16e5a655472b4
Cr-Commit-Position: refs/heads/master@{#422142}