Revert "cc: Simplify raster task completion notification logic"

Revert "cc: Simplify raster task completion notification logic"

This CL causes Chrome to freeze on e.g. jsfiddle.net/r8dx9/1/embedded/result
See crbug.com/331534 for details.

> cc: Simplify raster task completion notification logic
>
> Previously the pixel buffer raster worker pool used a combination of
> polling and explicit notifications from the raster worker pool to decide
> when to tell the client about the completion of 1) all tasks or 2) the
> subset of tasks required for activation. This patch simplifies the logic
> by only triggering the notification based on the OnRasterTasksFinished
> and OnRasterTasksRequiredForActivationFinished calls from the worker
> pool.
>
> BUG=307841
>
> Review URL: https://codereview.chromium.org/99873007

R=reveman@chromium.org,skyostil@chromium.org
BUG=331534
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=243545

[ernstm, 2014-01-07 22:31:47]

PTAL

[enne (OOO), 2014-01-07 22:42:33]

lgtm

[commit-bot: I haz the power, 2014-01-07 22:46:36]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ernstm@chromium.org/126143006/1

[commit-bot: I haz the power, 2014-01-08 01:17:47]

Retried try job too often on win_rel for step(s) nacl_integration
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2014-01-08 01:20:13]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ernstm@chromium.org/126143006/1

[commit-bot: I haz the power, 2014-01-08 03:32:04]

Retried try job too often on win_rel for step(s) nacl_integration
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[commit-bot: I haz the power, 2014-01-08 06:00:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ernstm@chromium.org/126143006/1

[commit-bot: I haz the power, 2014-01-08 13:00:26]

Change committed as 243545