Fix state restoration logic in canvas 2d wakeup from hibernation

Fix state restoration logic in canvas 2d wakeup from hibernation

This fixes an important detail that was overlooked in
https://codereview.chromium.org/1507863005/: After a Canvas2DLayerBridge
wakes up from hibernation, if deferred rendering is disabled, the
matrix+clip stack must be reconstructed on the new SkCanas. Same
thing when a hibernating canvas switches to software rendering mode for
rendering in the background.

BUG=567161
Committed: https://crrev.com/4a48eda91633abbc68d9ed7a3dbce946840fee0a
Cr-Commit-Position: refs/heads/master@{#365093}

[Justin Novosad, 2015-12-14 02:45:15]

junov@chromium.org changed reviewers:
+ senorblanco@chromium.org

[Justin Novosad, 2015-12-14 02:45:16]

PTAL

[Stephen White, 2015-12-14 18:47:04]

LGTM

[Justin Novosad, 2015-12-14 20:37:44]

The CQ bit was checked by junov@chromium.org

[commit-bot: I haz the power, 2015-12-14 20:39:04]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1520123002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1520123002/1

[commit-bot: I haz the power, 2015-12-14 20:52:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-14 20:53:23]

Description was changed from

==========
Fix state restoration logic in canvas 2d wakeup from hibernation

This fixes an important detail that was overlooked in
https://codereview.chromium.org/1507863005/: After a Canvas2DLayerBridge
wakes up from hibernation, if deferred rendering is disabled, the
matrix+clip stack must be reconstructed on the new SkCanas. Same
thing when a hibernating canvas switches to software rendering mode for
rendering in the background.

BUG=567161
==========

to

==========
Fix state restoration logic in canvas 2d wakeup from hibernation

This fixes an important detail that was overlooked in
https://codereview.chromium.org/1507863005/: After a Canvas2DLayerBridge
wakes up from hibernation, if deferred rendering is disabled, the
matrix+clip stack must be reconstructed on the new SkCanas. Same
thing when a hibernating canvas switches to software rendering mode for
rendering in the background.

BUG=567161

Committed: https://crrev.com/4a48eda91633abbc68d9ed7a3dbce946840fee0a
Cr-Commit-Position: refs/heads/master@{#365093}
==========

[commit-bot: I haz the power, 2015-12-14 20:53:24]

Patchset 1 (id:??) landed as
https://crrev.com/4a48eda91633abbc68d9ed7a3dbce946840fee0a
Cr-Commit-Position: refs/heads/master@{#365093}