The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e9c5df7d3be68ce0d8cf656dac0b9a1912ea5a28

commit e9c5df7d3be68ce0d8cf656dac0b9a1912ea5a28
Author: zqzhang <zqzhang@chromium.org>
Date: Wed Feb 08 17:56:55 2017

[Media>UI] Reset media session actions when navigating away

There is a bug caused by media session actions being not properly reset
when navigating away, so that the notification control buttons stays the
same when the new page starts to play media. This CL fixes the issue.

BUG= 689664 

Review-Url: https://codereview.chromium.org/2680103002
Cr-Commit-Position: refs/heads/master@{#449032}

[modify] https://crrev.com/e9c5df7d3be68ce0d8cf656dac0b9a1912ea5a28/chrome/android/BUILD.gn
[modify] https://crrev.com/e9c5df7d3be68ce0d8cf656dac0b9a1912ea5a28/chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaNotificationManager.java
[modify] https://crrev.com/e9c5df7d3be68ce0d8cf656dac0b9a1912ea5a28/chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaSessionTabHelper.java
[modify] https://crrev.com/e9c5df7d3be68ce0d8cf656dac0b9a1912ea5a28/chrome/android/java_sources.gni
[add] https://crrev.com/e9c5df7d3be68ce0d8cf656dac0b9a1912ea5a28/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/NotificationActionsUpdatedTest.java

Your change meets the bar and is auto-approved for M57. Please go ahead and merge the CL to branch 2987 manually. Please contact milestone owner if you have questions.
Owners: amineer@(clank), cmasso@(bling), ketakid@(cros), govind@(desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/15ab0ba733d50b9f7567bd77049aafeaa9114b0b

commit 15ab0ba733d50b9f7567bd77049aafeaa9114b0b
Author: Zhiqiang Zhang <zqzhang@google.com>
Date: Wed Feb 08 18:23:56 2017

[Media>UI] Reset media session actions when navigating away

There is a bug caused by media session actions being not properly reset
when navigating away, so that the notification control buttons stays the
same when the new page starts to play media. This CL fixes the issue.

BUG= 689664 

Review-Url: https://codereview.chromium.org/2680103002
Cr-Commit-Position: refs/heads/master@{#449032}
(cherry picked from commit e9c5df7d3be68ce0d8cf656dac0b9a1912ea5a28)

Review-Url: https://codereview.chromium.org/2685943002 .
Cr-Commit-Position: refs/branch-heads/2987@{#389}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}

[modify] https://crrev.com/15ab0ba733d50b9f7567bd77049aafeaa9114b0b/chrome/android/BUILD.gn
[modify] https://crrev.com/15ab0ba733d50b9f7567bd77049aafeaa9114b0b/chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaNotificationManager.java
[modify] https://crrev.com/15ab0ba733d50b9f7567bd77049aafeaa9114b0b/chrome/android/java/src/org/chromium/chrome/browser/media/ui/MediaSessionTabHelper.java
[modify] https://crrev.com/15ab0ba733d50b9f7567bd77049aafeaa9114b0b/chrome/android/java_sources.gni
[add] https://crrev.com/15ab0ba733d50b9f7567bd77049aafeaa9114b0b/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/NotificationActionsUpdatedTest.java