Merge M52: "Restrict OnSuspend() restrictions for audio to non-Android."

Merge M52: "Restrict OnSuspend() restrictions for audio to non-Android."

On Android suspend and resume work differently than other platforms,
the notifications are delivered a few seconds after an app is put
into the background. We don't want to suspend background audio in
these cases; full player suspend and resume is controlled by the
WebMediaPlayerImpl instead when necessary (video only, paused, etc).

BUG=623066
TEST=background page in bug, audio plays forever.

Review-Url: https://codereview.chromium.org/2098703005
Cr-Commit-Position: refs/heads/master@{#402034}
(cherry picked from commit a11de20c793b16d4dc4e5440097f8493666f0721)

Committed: https://chromium.googlesource.com/chromium/src/+/84a0e4c0a9d8b6e2ba2850ee50f5d8612deff691

[DaleCurtis, 2016-06-25 01:13:07]

Description was changed from

==========
Merge M52: "Restrict OnSuspend() restrictions for audio to non-Android."

On Android suspend and resume work differently than other platforms,
the notifications are delivered a few seconds after an app is put
into the background. We don't want to suspend background audio in
these cases; full player suspend and resume is controlled by the
WebMediaPlayerImpl instead when necessary (video only, paused, etc).

BUG=623066
TEST=background page in bug, audio plays forever.

Review-Url: https://codereview.chromium.org/2098703005
Cr-Commit-Position: refs/heads/master@{#402034}
(cherry picked from commit a11de20c793b16d4dc4e5440097f8493666f0721)
==========

to

==========
Merge M52: "Restrict OnSuspend() restrictions for audio to non-Android."

On Android suspend and resume work differently than other platforms,
the notifications are delivered a few seconds after an app is put
into the background. We don't want to suspend background audio in
these cases; full player suspend and resume is controlled by the
WebMediaPlayerImpl instead when necessary (video only, paused, etc).

BUG=623066
TEST=background page in bug, audio plays forever.

Review-Url: https://codereview.chromium.org/2098703005
Cr-Commit-Position: refs/heads/master@{#402034}
(cherry picked from commit a11de20c793b16d4dc4e5440097f8493666f0721)

Committed:
https://chromium.googlesource.com/chromium/src/+/84a0e4c0a9d8b6e2ba2850ee50f5...
==========

[DaleCurtis, 2016-06-25 01:13:09]

Committed patchset #1 (id:1) manually as
84a0e4c0a9d8b6e2ba2850ee50f5d8612deff691.