Add explicit forwarding stubs for geometry classes cc uses

Add explicit forwarding stubs for geometry classes cc uses

libcc depends on several geometry types from WebCore - IntRect, FloatQuad, etc.
We were picking these up by a header copying rule in the webkit_platform target
that copies these headers into the generated build dir, but since there is no
hard dependency link from libcc to webkit_platform this either work or not work
depending on the exact build order on the user's system and was thus very
fragile. This adds explicit forwarding headers which are ugly but at least
will work.

BUG=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=153631

[enne (OOO), 2012-08-28 00:44:33]

LGTM

https://chromiumcodereview.appspot.com/10883076/diff/1/cc/DEPS
File cc/DEPS (right):

https://chromiumcodereview.appspot.com/10883076/diff/1/cc/DEPS#newcode13
cc/DEPS:13: # http://crbug.com/144542
144542 -> 144540

[commit-bot: I haz the power, 2012-08-28 01:04:13]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jamesr@chromium.org/10883076/4001

[commit-bot: I haz the power, 2012-08-28 06:12:34]

Change committed as 153631