cc: Use ExpandRectIgnoringBordersToTileBoundsWithBordersEmpty.

cc: Use ExpandRectIgnoringBordersToTileBoundsWithBordersEmpty.

When expanding the live tiles rect, we want to include border pixels
for all tiles that intersect the live tiles rect. It used to do this
by also including any tiles whose border pixels intersect the live
tiles rect, but that's excessive.

This adds ExpandRectIgnoringBordersToTileBoundsWithBordersEmpty and
uses it to expand the live tiles rect, the unit test
PictureLayerTilingIteratorTest.ResizeOverBorderPixelsDeletesTiles
covers this usage of the method.

The ExpandRectToTileBoundsWithBorders is no longer used, so remove it.

R=enne
BUG=386998
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=282896

[danakj, 2014-07-11 21:26:36]

Depends on https://codereview.chromium.org/387613002/

[enne (OOO), 2014-07-11 23:05:44]

lgtm

[danakj, 2014-07-14 01:22:50]

The CQ bit was checked by danakj@chromium.org

[commit-bot: I haz the power, 2014-07-14 01:23:10]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/danakj@chromium.org/385123006/1

[commit-bot: I haz the power, 2014-07-14 03:07:33]

Change committed as 282896