Revert of FFmpeg roll for M43.

Revert of FFmpeg roll for M43. (patchset #2 id:20001 of https://codereview.chromium.org/1032543004/)

Reason for revert:
Failed to compile:

http://build.chromium.org/p/chromium.gpu/builders/GPU%20Mac%20Builder/builds/30642

Original issue's description:
> FFmpeg roll for M43.
>
> Update FFmpegDemuxer::OnFindStreamInfoDone with the new
> AVFormatContext layout.
>
> BUG=465940
>
> Committed: https://crrev.com/02c707cdd098e97dd78c3ff2858576dcbcaa9082
> Cr-Commit-Position: refs/heads/master@{#322688}

TBR=dalecurtis@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=465940
Committed: https://crrev.com/e4af35fab321fa29f1c1a0533469e44d58d4a46e
Cr-Commit-Position: refs/heads/master@{#322690}

[watk, 2015-03-28 01:15:43]

Created Revert of FFmpeg roll for M43.

[commit-bot: I haz the power, 2015-03-28 01:15:54]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1046493002/1

[commit-bot: I haz the power, 2015-03-28 01:15:55]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-03-28 01:15:56]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[watk, 2015-03-28 01:17:14]

watk@chromium.org changed reviewers:
+ scheib@chromium.org

[watk, 2015-03-28 01:19:12]

The CQ bit was checked by watk@chromium.org

[commit-bot: I haz the power, 2015-03-28 01:19:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1046493002/1

[commit-bot: I haz the power, 2015-03-28 01:19:23]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-03-28 01:19:24]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[ddorwin, 2015-03-28 01:26:06]

ddorwin@chromium.org changed reviewers:
+ ddorwin@chromium.org

[ddorwin, 2015-03-28 01:26:07]

rs LGTM

[watk, 2015-03-28 01:26:38]

The CQ bit was checked by watk@chromium.org

[commit-bot: I haz the power, 2015-03-28 01:26:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1046493002/1

[commit-bot: I haz the power, 2015-03-28 01:27:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-28 01:28:26]

Patchset 1 (id:??) landed as
https://crrev.com/e4af35fab321fa29f1c1a0533469e44d58d4a46e
Cr-Commit-Position: refs/heads/master@{#322690}