Merge to M51: Various fixes to prevent playback hang on MotoX.

Merge to M51: Various fixes to prevent playback hang on MotoX.

e886ba2 Avoid waiting on the SurfaceTexture until we need to.
cecc8a4 Increase cases where back/front buffering early rendering occur.
9b07026 Queue more input buffers and process more output if possible.
9771835 Avoid unnecessary post task during frame delivery.
fb00bd3 ReleaseOutputBuffer to surface back and front buffers where possible.
6c5e1df Delay actual flush and release in AVDA
4ddcd18 Store AVDACodecImage list in shared state, cleanup callers.

BUG=598963, 601066
TBR=liberato, timav

(cherry picked from commit 5cda4bb2b9d1a7b7821f87df58337928361ce2c3)

Committed: https://chromium.googlesource.com/chromium/src/+/b6b2141b0683cad4d1f7ccfcaa6350c31437cdf2

[DaleCurtis, 2016-05-10 04:15:41]

Description was changed from

==========
Merge to M51: Various fixes to prevent playback hang on MotoX.

e886ba2 Avoid waiting on the SurfaceTexture until we need to.
cecc8a4 Increase cases where back/front buffering early rendering occur.
9b07026 Queue more input buffers and process more output if possible.
9771835 Avoid unnecessary post task during frame delivery.
fb00bd3 ReleaseOutputBuffer to surface back and front buffers where possible.
6c5e1df Delay actual flush and release in AVDA
4ddcd18 Store AVDACodecImage list in shared state, cleanup callers.

BUG=598963, 601066
TBR=liberato, timav

(cherry picked from commit 5cda4bb2b9d1a7b7821f87df58337928361ce2c3)
==========

to

==========
Merge to M51: Various fixes to prevent playback hang on MotoX.

e886ba2 Avoid waiting on the SurfaceTexture until we need to.
cecc8a4 Increase cases where back/front buffering early rendering occur.
9b07026 Queue more input buffers and process more output if possible.
9771835 Avoid unnecessary post task during frame delivery.
fb00bd3 ReleaseOutputBuffer to surface back and front buffers where possible.
6c5e1df Delay actual flush and release in AVDA
4ddcd18 Store AVDACodecImage list in shared state, cleanup callers.

BUG=598963, 601066
TBR=liberato, timav

(cherry picked from commit 5cda4bb2b9d1a7b7821f87df58337928361ce2c3)

Committed:
https://chromium.googlesource.com/chromium/src/+/b6b2141b0683cad4d1f7ccfcaa63...
==========

[DaleCurtis, 2016-05-10 04:15:43]

Committed patchset #1 (id:1) manually as
b6b2141b0683cad4d1f7ccfcaa6350c31437cdf2.