Fix composited toolbar in incorrect position for Chrome Home

Fix composited toolbar in incorrect position for Chrome Home

Previously resize events did not explicitly trigger renders from the
compositor. This went unnoticed because most of the UI existed at
the top of the screen which was largely unaffected by the resize
event. Now, the ToolbarSceneLayer is responsible for requesting
renders when it is at the bottom of the screen.

BUG=698111
Review-Url: https://codereview.chromium.org/2730183002
Cr-Commit-Position: refs/heads/master@{#455781}
Committed: https://chromium.googlesource.com/chromium/src/+/0df0c5fffb5b95da4cb59bdededb180367dc5e50

[mdjones, 2017-03-04 00:17:32]

mdjones@chromium.org changed reviewers:
+ dtrainor@chromium.org

[mdjones, 2017-03-04 00:17:33]

ptal

[David Trainor- moved to gerrit, 2017-03-09 16:42:48]

lgtm

[mdjones, 2017-03-09 16:56:09]

The CQ bit was checked by mdjones@chromium.org

[commit-bot: I haz the power, 2017-03-09 16:56:37]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-09 17:30:44]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489078569534870, "parent_rev":
"b4478d5798a58d39e4975f14122ed064e0ca4466", "commit_rev":
"0df0c5fffb5b95da4cb59bdededb180367dc5e50"}

[commit-bot: I haz the power, 2017-03-09 17:36:35]

Description was changed from

==========
Fix composited toolbar in incorrect position for Chrome Home

Previously resize events did not explicitly trigger renders from the
compositor. This went unnoticed because most of the UI existed at
the top of the screen which was largely unaffected by the resize
event. Now, the ToolbarSceneLayer is responsible for requesting
renders when it is at the bottom of the screen.

BUG=698111
==========

to

==========
Fix composited toolbar in incorrect position for Chrome Home

Previously resize events did not explicitly trigger renders from the
compositor. This went unnoticed because most of the UI existed at
the top of the screen which was largely unaffected by the resize
event. Now, the ToolbarSceneLayer is responsible for requesting
renders when it is at the bottom of the screen.

BUG=698111

Review-Url: https://codereview.chromium.org/2730183002
Cr-Commit-Position: refs/heads/master@{#455781}
Committed:
https://chromium.googlesource.com/chromium/src/+/0df0c5fffb5b95da4cb59bdededb...
==========

[commit-bot: I haz the power, 2017-03-09 17:36:36]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/0df0c5fffb5b95da4cb59bdededb...