cc: Stop passing the unused opaque rect out-param to blink.

cc: Stop passing the unused opaque rect out-param to blink.

Blink now has methods that don't take the rect out-param so use those.
Then we can delete the old methods with the out-param in blink.

R=vmpstr
BUG=413479
Committed: https://crrev.com/9235f2eaee3783a9c64b6745131f970887ef351d
Cr-Commit-Position: refs/heads/master@{#295092}

[vmpstr, 2014-09-16 16:45:09]

lgtm

[vmpstr, 2014-09-16 16:45:14]

The CQ bit was checked by vmpstr@chromium.org

[commit-bot: I haz the power, 2014-09-16 16:47:24]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/572873005/1

[commit-bot: I haz the power, 2014-09-16 17:22:11]

Committed patchset #1 (id:1) as 65ec2420d46644a9dd2b866f188d9716b2b51d50

[commit-bot: I haz the power, 2014-09-16 17:23:47]

Patchset 1 (id:??) landed as
https://crrev.com/9235f2eaee3783a9c64b6745131f970887ef351d
Cr-Commit-Position: refs/heads/master@{#295092}