Revert r175934 "Accelerate small canvases if Ganesh is on."

Revert r175934 "Accelerate small canvases if Ganesh is on."

The problem with this patch is it is attempting to determine if we are
gpu rasterized by querying the compositor but compositing state may not yet
be initialized at the time the canvas is used, or may never be initialized
in some cases. This is just conceptually broken and needs to be addressed
with a different approach that doesn't query the compositor.

TBR=abarth@chromium.org
NOTRY=true

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=176654

[jamesr, 2014-06-20 22:37:52]

The CQ bit was checked by jamesr@chromium.org

[commit-bot: I haz the power, 2014-06-20 22:38:56]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jamesr@chromium.org/343273002/1

[jamesr, 2014-06-20 22:41:00]

The CQ bit was unchecked by jamesr@chromium.org

[jamesr, 2014-06-20 22:41:01]

The CQ bit was checked by jamesr@chromium.org

[commit-bot: I haz the power, 2014-06-20 22:41:08]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jamesr@chromium.org/343273002/1

[commit-bot: I haz the power, 2014-06-20 22:42:05]

Change committed as 176654