The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/10bf6b68a61aa9c81e091f4866f0614b11dfcc1a

commit 10bf6b68a61aa9c81e091f4866f0614b11dfcc1a
Author: zqzhang <zqzhang@chromium.org>
Date: Thu Mar 24 19:44:38 2016

[MediaSession] Increasing media duration to reduce flakiness in MediaSessionTest

The short audio/video duration in MediaSessionTest was too short. Their
playback state in the DOM is very flaky. This CL make them longer to
reduce the flakiness.

BUG= 597694 

Review URL: https://codereview.chromium.org/1833703002

Cr-Commit-Position: refs/heads/master@{#383123}

[delete] https://crrev.com/faed95410a75a3f9237eca674f4f16f6958031d3/content/test/data/android/media/audio-2seconds.ogg
[add] https://crrev.com/10bf6b68a61aa9c81e091f4866f0614b11dfcc1a/content/test/data/android/media/audio-4seconds.ogg
[modify] https://crrev.com/10bf6b68a61aa9c81e091f4866f0614b11dfcc1a/content/test/data/android/media/media-session.html
[delete] https://crrev.com/faed95410a75a3f9237eca674f4f16f6958031d3/content/test/data/android/media/video-2seconds.webm
[add] https://crrev.com/10bf6b68a61aa9c81e091f4866f0614b11dfcc1a/content/test/data/android/media/video-4seconds.webm