media: VEA unittest: make sure allocated memory is 64byte aligned

media: VEA unittest: make sure allocated memory is 64byte aligned

When running video_encode_accelerator_unittest :

../../media/gpu/video_encode_accelerator_unittest.cc:301: Failure
Value of: 0
Expected: reinterpret_cast<off_t>(&test_stream->aligned_in_file_data[0]) & 63
Which is: 32
File should be mapped at a 64 byte boundary

Also reuse base::bits::Align.

BUG=624254
TEST=video_encode_accelerator_unittest

Review-Url: https://codereview.chromium.org/2110063002
Cr-Commit-Position: refs/heads/master@{#403435}
(cherry picked from commit b79f630424367d6d65de0e7e0a8e80a823e79952)

Committed: https://chromium.googlesource.com/chromium/src/+/341905a75a513580e7c1ceaa9b10ac0cbc90d08a

[wuchengli, 2016-07-11 03:15:01]

Description was changed from

==========
media: VEA unittest: make sure allocated memory is 64byte aligned

When running video_encode_accelerator_unittest :

../../media/gpu/video_encode_accelerator_unittest.cc:301: Failure
Value of: 0
Expected: reinterpret_cast<off_t>(&test_stream->aligned_in_file_data[0]) & 63
Which is: 32
File should be mapped at a 64 byte boundary

Also reuse base::bits::Align.

BUG=624254
TEST=video_encode_accelerator_unittest

Review-Url: https://codereview.chromium.org/2110063002
Cr-Commit-Position: refs/heads/master@{#403435}
(cherry picked from commit b79f630424367d6d65de0e7e0a8e80a823e79952)
==========

to

==========
media: VEA unittest: make sure allocated memory is 64byte aligned

When running video_encode_accelerator_unittest :

../../media/gpu/video_encode_accelerator_unittest.cc:301: Failure
Value of: 0
Expected: reinterpret_cast<off_t>(&test_stream->aligned_in_file_data[0]) & 63
Which is: 32
File should be mapped at a 64 byte boundary

Also reuse base::bits::Align.

BUG=624254
TEST=video_encode_accelerator_unittest

Review-Url: https://codereview.chromium.org/2110063002
Cr-Commit-Position: refs/heads/master@{#403435}
(cherry picked from commit b79f630424367d6d65de0e7e0a8e80a823e79952)

Committed:
https://chromium.googlesource.com/chromium/src/+/341905a75a513580e7c1ceaa9b10...
==========

[wuchengli, 2016-07-11 03:15:03]

Committed patchset #1 (id:1) manually as
341905a75a513580e7c1ceaa9b10ac0cbc90d08a.