Revert of Buffer 2 seconds of data in the ffmpeg demuxer.

Revert of Buffer 2 seconds of data in the ffmpeg demuxer. (patchset #3 id:40001 of https://codereview.chromium.org/2737653002/ )

Reason for revert:
Broke layout test compositing/video/video-poster.html on Mac, Linux ASAN:
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Mac10.9/43534
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Mac10.10/31122
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Linux%20Trusty%20ASAN/1414

Original issue's description:
> Buffer 2 seconds of data in the ffmpeg demuxer.
> 
> This has been shown to reduce jank in badly muxed mp4 files.
> 
> BUG=540898
> 
> Review-Url: https://codereview.chromium.org/2737653002
> Cr-Commit-Position: refs/heads/master@{#455551}
> Committed: https://chromium.googlesource.com/chromium/src/+/e23907eaba82f5595b74fb0094968481d6e00514

TBR=dalecurtis@chromium.org,dalecurtis@google.com,hubbe@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=540898
Review-Url: https://codereview.chromium.org/2740863002
Cr-Commit-Position: refs/heads/master@{#455648}
Committed: https://chromium.googlesource.com/chromium/src/+/4ea3f616e30bd2c052b44e4455988b4362cbb0ec

[Sam McNally, 2017-03-09 02:43:49]

The CQ bit was checked by sammc@chromium.org

[Sam McNally, 2017-03-09 02:43:49]

Created Revert of Buffer 2 seconds of data in the ffmpeg demuxer.

[commit-bot: I haz the power, 2017-03-09 02:44:27]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-09 02:45:07]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489027429016310, "parent_rev":
"7a06624223475946620e19af8322f7cf4ebd8dc1", "commit_rev":
"4ea3f616e30bd2c052b44e4455988b4362cbb0ec"}

[commit-bot: I haz the power, 2017-03-09 02:45:50]

Description was changed from

==========
Revert of Buffer 2 seconds of data in the ffmpeg demuxer. (patchset #3 id:40001
of https://codereview.chromium.org/2737653002/ )

Reason for revert:
Broke layout test compositing/video/video-poster.html on Mac, Linux ASAN:
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Mac10.9/43534
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Mac10.10/31122
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Linux%20Trust...

Original issue's description:
> Buffer 2 seconds of data in the ffmpeg demuxer.
> 
> This has been shown to reduce jank in badly muxed mp4 files.
> 
> BUG=540898
> 
> Review-Url: https://codereview.chromium.org/2737653002
> Cr-Commit-Position: refs/heads/master@{#455551}
> Committed:
https://chromium.googlesource.com/chromium/src/+/e23907eaba82f5595b74fb009496...

TBR=dalecurtis@chromium.org,dalecurtis@google.com,hubbe@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=540898
==========

to

==========
Revert of Buffer 2 seconds of data in the ffmpeg demuxer. (patchset #3 id:40001
of https://codereview.chromium.org/2737653002/ )

Reason for revert:
Broke layout test compositing/video/video-poster.html on Mac, Linux ASAN:
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Mac10.9/43534
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Mac10.10/31122
https://luci-milo.appspot.com/buildbot/chromium.webkit/WebKit%20Linux%20Trust...

Original issue's description:
> Buffer 2 seconds of data in the ffmpeg demuxer.
> 
> This has been shown to reduce jank in badly muxed mp4 files.
> 
> BUG=540898
> 
> Review-Url: https://codereview.chromium.org/2737653002
> Cr-Commit-Position: refs/heads/master@{#455551}
> Committed:
https://chromium.googlesource.com/chromium/src/+/e23907eaba82f5595b74fb009496...

TBR=dalecurtis@chromium.org,dalecurtis@google.com,hubbe@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=540898

Review-Url: https://codereview.chromium.org/2740863002
Cr-Commit-Position: refs/heads/master@{#455648}
Committed:
https://chromium.googlesource.com/chromium/src/+/4ea3f616e30bd2c052b44e445598...
==========

[commit-bot: I haz the power, 2017-03-09 02:45:51]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/4ea3f616e30bd2c052b44e445598...