Cleanup DeprecatedPaintLayer::physicalBoundingBox() and derivatives

Cleanup DeprecatedPaintLayer::physicalBoundingBox() and derivatives

DeprecatedPaintLayer::physicalBoundingBox() returns the layer bounding box
in physical direction, translated to an ancestor layer's space. The caller
can either specify the ancestor layer or a pre-computed translation. Only one
of the parameter will be used.

This CL overloads the function to remove the extraneous argument at callers.

No behavioral change, no test added.

BUG=508383
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201772

[trchen, 2015-09-04 03:25:58]

trchen@chromium.org changed reviewers:
+ pdr@chromium.org

[trchen, 2015-09-04 03:26:02]

The CQ bit was checked by trchen@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-09-04 03:26:17]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1315303009/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1315303009/1

[pdr., 2015-09-04 03:46:33]

LGTM

I added "BUG=508383" to the change description so we can keep these together.

[commit-bot: I haz the power, 2015-09-04 04:33:16]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-09-04 04:33:16]

Dry run: This issue passed the CQ dry run.

[trchen, 2015-09-04 04:41:33]

The CQ bit was checked by trchen@chromium.org

[commit-bot: I haz the power, 2015-09-04 04:41:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1315303009/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1315303009/1

[commit-bot: I haz the power, 2015-09-04 04:46:00]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201772