Change GPU Tile rounding to 32

Change GPU Tile rounding to 32

Rounding to 64 was done to match SW, but this leads to android
memory regressions. Use 32 instead, which still fixes the Core
Animation issue, but doesn’t regress memory as much.

BUG=632274
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2258343002
Cr-Commit-Position: refs/heads/master@{#413310}
(cherry picked from commit 55f181c683f26d1d43f264367363790a802e096d)

Committed: https://chromium.googlesource.com/chromium/src/+/73b770a74b832456dc2d64bc3820fa300c14e457

[ericrk, 2016-08-22 17:49:11]

Description was changed from

==========
Change GPU Tile rounding to 32

Rounding to 64 was done to match SW, but this leads to android
memory regressions. Use 32 instead, which still fixes the Core
Animation issue, but doesn’t regress memory as much.

BUG=632274
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2258343002
Cr-Commit-Position: refs/heads/master@{#413310}
(cherry picked from commit 55f181c683f26d1d43f264367363790a802e096d)
==========

to

==========
Change GPU Tile rounding to 32

Rounding to 64 was done to match SW, but this leads to android
memory regressions. Use 32 instead, which still fixes the Core
Animation issue, but doesn’t regress memory as much.

BUG=632274
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2258343002
Cr-Commit-Position: refs/heads/master@{#413310}
(cherry picked from commit 55f181c683f26d1d43f264367363790a802e096d)

Committed:
https://chromium.googlesource.com/chromium/src/+/73b770a74b832456dc2d64bc3820...
==========

[ericrk, 2016-08-22 17:49:12]

Committed patchset #1 (id:1) manually as
73b770a74b832456dc2d64bc3820fa300c14e457.