Revert of Audio and video decoders for MediaCodecPlayer

Revert of Audio and video decoders for MediaCodecPlayer (patchset #11 id:200001 of https://codereview.chromium.org/1176993005/)

Reason for revert:
Failing tests. Specifically, media_unittests and org.chromium.android_webview.test.MediaAccessPermissionRequestTest#testGrantAccess

https://build.chromium.org/p/chromium.webkit/builders/Android%20Tests%20%28dbg%29/builds/26686

Original issue's description:
> Audio and video decoders for MediaCodecPlayer
>
> This is a prerequisite for MediaCodecPlayer (to be committed later).
>
> Each decoder controls the queue of incoming access units and the
> Android MediaCodec object through the instance of MediaCodecBridge.
> The decoder owns a dedicated thread (Decoder thread) to access the
> MediaCodecBridge. The manipulations with MediaCodec buffers, both
> input and output, as well the rendering happen on this one thread.
>
> For discussion see https://codereview.chromium.org/1128383003/
>
> BUG=407577
>
> Committed: https://crrev.com/d472a7860ac521ef72c53c9bb04926d4747e0b01
> Cr-Commit-Position: refs/heads/master@{#335618}

TBR=qinmin@chromium.org,wolenetz@chromium.org,watk@chromium.org,liberato@chromium.org,timav@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=407577
Committed: https://crrev.com/c4c79ad711ae50cee92209c5d4423711de018d2a
Cr-Commit-Position: refs/heads/master@{#335661}

[Stephen Chennney, 2015-06-23 13:27:34]

Created Revert of Audio and video decoders for MediaCodecPlayer

[commit-bot: I haz the power, 2015-06-23 13:28:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1194423008/1

[commit-bot: I haz the power, 2015-06-23 13:29:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-23 13:30:28]

Patchset 1 (id:??) landed as
https://crrev.com/c4c79ad711ae50cee92209c5d4423711de018d2a
Cr-Commit-Position: refs/heads/master@{#335661}