Fix IMFSample leak in DXVAVideoDecodeAccelerator

Fix IMFSample leak in DXVAVideoDecodeAccelerator

Since r439662 DXVAVideoDecodeAccelerator has been adding an extra
reference to the IMFSample, causing a leak. Switch more code to use
ScopedComPtr to fix this.

BUG=689678
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2693923003
Cr-Commit-Position: refs/heads/master@{#450218}
(cherry picked from commit ab60729c01d4e123052aa4fecdf3752dc57bf9c2)

Review-Url: https://codereview.chromium.org/2699533005 .
Cr-Commit-Position: refs/branch-heads/2987@{#535}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/1ad1e31fe09edd48255871b00db7cd8298d9e7b6

[jbauman, 2017-02-16 01:03:11]

Description was changed from

==========
Fix IMFSample leak in DXVAVideoDecodeAccelerator

Since r439662 DXVAVideoDecodeAccelerator has been adding an extra
reference to the IMFSample, causing a leak. Switch more code to use
ScopedComPtr to fix this.

BUG=689678
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2693923003
Cr-Commit-Position: refs/heads/master@{#450218}
(cherry picked from commit ab60729c01d4e123052aa4fecdf3752dc57bf9c2)
==========

to

==========
Fix IMFSample leak in DXVAVideoDecodeAccelerator

Since r439662 DXVAVideoDecodeAccelerator has been adding an extra
reference to the IMFSample, causing a leak. Switch more code to use
ScopedComPtr to fix this.

BUG=689678
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2693923003
Cr-Commit-Position: refs/heads/master@{#450218}
(cherry picked from commit ab60729c01d4e123052aa4fecdf3752dc57bf9c2)

Review-Url: https://codereview.chromium.org/2699533005 .
Cr-Commit-Position: refs/branch-heads/2987@{#535}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/1ad1e31fe09edd48255871b00db7...
==========

[jbauman, 2017-02-16 01:03:12]

Committed patchset #1 (id:1) manually as
1ad1e31fe09edd48255871b00db7cd8298d9e7b6 (tree was closed).