cc: Remove awareness of incremental updates from state machine.

cc: Remove awareness of incremental updates from state machine.

CCScheduler handles incremental resources updates based on amount of
time until next vsync tick. We currently get no benefit from having
CCSchedulerStateMachine aware of these incremental updates. This
cleans up both CCScheduler and CCSchedulerStateMachine be removing
incremental update awareness from CCSchedulerStateMachine.

WebKit bug: https://bugs.webkit.org/show_bug.cgi?id=95290

BUG=
TEST=cc_unittests


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=156950

[reveman, 2012-09-14 22:42:20]

this is the state machine cleanup following
https://chromiumcodereview.appspot.com/10911262/. has already been r+ on the
webkit bug. please let me know if still ok to land.

[jamesr, 2012-09-14 22:43:40]

lgtm

[commit-bot: I haz the power, 2012-09-14 22:53:15]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/reveman@chromium.org/10913261/1

[commit-bot: I haz the power, 2012-09-15 01:35:34]

Change committed as 156950