Merge M58: "Don't histogram paint time after ending or seeking."

Merge M58: "Don't histogram paint time after ending or seeking."

There will be no further paint if we seek past the end of the video
stream or reach end of stream; without this, the next actual play
which vends a video frame will trigger the histogram path. Which
may be minutes or hours later.

BUG=709302
TEST=seek to near end of video, trigger bg opt, observe no bad time.

Review-Url: https://codereview.chromium.org/2805683004
Cr-Commit-Position: refs/heads/master@{#463476}
(cherry picked from commit 1af3c1a4a85d37eaa0398bb5c115d2349f01c6ef)

Review-Url: https://codereview.chromium.org/2821573002 .
Cr-Commit-Position: refs/branch-heads/3029@{#701}
Cr-Branched-From: 939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed: https://chromium.googlesource.com/chromium/src/+/ced09bec389e0a04ff27f49527b25557dae7420f

[DaleCurtis, 2017-04-13 22:27:44]

Description was changed from

==========
Merge M58: "Don't histogram paint time after ending or seeking."

There will be no further paint if we seek past the end of the video
stream or reach end of stream; without this, the next actual play
which vends a video frame will trigger the histogram path. Which
may be minutes or hours later.

BUG=709302
TEST=seek to near end of video, trigger bg opt, observe no bad time.

Review-Url: https://codereview.chromium.org/2805683004
Cr-Commit-Position: refs/heads/master@{#463476}
(cherry picked from commit 1af3c1a4a85d37eaa0398bb5c115d2349f01c6ef)
==========

to

==========
Merge M58: "Don't histogram paint time after ending or seeking."

There will be no further paint if we seek past the end of the video
stream or reach end of stream; without this, the next actual play
which vends a video frame will trigger the histogram path. Which
may be minutes or hours later.

BUG=709302
TEST=seek to near end of video, trigger bg opt, observe no bad time.

Review-Url: https://codereview.chromium.org/2805683004
Cr-Commit-Position: refs/heads/master@{#463476}
(cherry picked from commit 1af3c1a4a85d37eaa0398bb5c115d2349f01c6ef)

Review-Url: https://codereview.chromium.org/2821573002 .
Cr-Commit-Position: refs/branch-heads/3029@{#701}
Cr-Branched-From:
939b32ee5ba05c396eef3fd992822fcca9a2e262-refs/heads/master@{#454471}
Committed:
https://chromium.googlesource.com/chromium/src/+/ced09bec389e0a04ff27f49527b2...
==========

[DaleCurtis, 2017-04-13 22:27:45]

Committed patchset #1 (id:1) manually as
ced09bec389e0a04ff27f49527b25557dae7420f.