Smooth Tab Switching on aura.

Smooth Tab Switching on aura.

If there is no available front surface to display when switching to a tab, delay compositing until the next swap which gives us something
to display, or some timeout is reached instead.


BUG=126526
TEST=Manual


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=141733

[mmocny, 2012-06-05 19:54:45]

This will lock the compositor until the next swap if we dont have a front
surface to display.

Tested locally together with the drop frontbuffer patch, and it works great.

[mmocny, 2012-06-05 21:17:53]

Simplifying this patch as discussed.

[piman, 2012-06-05 21:20:21]

lgtm

[commit-bot: I haz the power, 2012-06-05 21:26:08]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mmocny@chromium.org/10543010/5002

[commit-bot: I haz the power, 2012-06-05 21:26:15]

Presubmit check for 10543010-5002 failed and returned exit status 1.

Running presubmit commit checks ...

** Presubmit ERRORS **
Missing LGTM from an OWNER for files in these directories:
    content/browser/renderer_host

[mmocny, 2012-06-06 14:28:44]

Ben: For OWNERS

This patch is in anticipation of front surface being released when a tab is
backgrounded, which has not landed yet.

[mmocny, 2012-06-12 17:16:49]

Scott, I think Ben is away, may you take a look for OWNERS please?

[sky, 2012-06-12 17:20:56]

LGTM

[commit-bot: I haz the power, 2012-06-12 19:22:18]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/mmocny@chromium.org/10543010/5002

[commit-bot: I haz the power, 2012-06-12 20:57:45]

Change committed as 141733