The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/01dc013d3ae6e6e1b5a0e34733652b2febabe488

commit 01dc013d3ae6e6e1b5a0e34733652b2febabe488
Author: watk <watk@chromium.org>
Date: Wed Mar 23 23:10:40 2016

media: Cancel any pending pipeline restart when the player is hidden

It's possible for WMPI to get an OnHidden callback while in the middle
of a suspend/resume restart. Previously it would continue with the
restart, incorrectly resuming after being hidden. Now it will cancel
any ongoing restart when receiving OnHidden.

BUG= 597404 

Review URL: https://codereview.chromium.org/1827873003

Cr-Commit-Position: refs/heads/master@{#382964}

[modify] https://crrev.com/01dc013d3ae6e6e1b5a0e34733652b2febabe488/media/blink/webmediaplayer_impl.cc

Your change meets the bar and is auto-approved for M50 (branch: 2661)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9a86871643138320e2066ee572bc4acba25c55d1

commit 9a86871643138320e2066ee572bc4acba25c55d1
Author: Chris Watkins <watk@chromium.org>
Date: Thu Mar 24 21:43:52 2016

media: Cancel any pending pipeline restart when the player is hidden

It's possible for WMPI to get an OnHidden callback while in the middle
of a suspend/resume restart. Previously it would continue with the
restart, incorrectly resuming after being hidden. Now it will cancel
any ongoing restart when receiving OnHidden.

BUG= 597404 

Review URL: https://codereview.chromium.org/1827873003

Cr-Commit-Position: refs/heads/master@{#382964}
(cherry picked from commit 01dc013d3ae6e6e1b5a0e34733652b2febabe488)

Review URL: https://codereview.chromium.org/1827283002 .

Cr-Commit-Position: refs/branch-heads/2661@{#383}
Cr-Branched-From: ef6f6ae5e4c96622286b563658d5cd62a6cf1197-refs/heads/master@{#378081}

[modify] https://crrev.com/9a86871643138320e2066ee572bc4acba25c55d1/media/blink/webmediaplayer_impl.cc