Add plumbing for scroll parent.
commit167c71249ca6de270b3dba75ca94f5de2deb3ea4
authorvollick@chromium.org <vollick@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Thu, 22 Aug 2013 15:49:36 +0000 (22 15:49 +0000)
committervollick@chromium.org <vollick@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Thu, 22 Aug 2013 15:49:36 +0000 (22 15:49 +0000)
treef18410fa594d656f881902ffbbdb1b9df08f5672
parent1d0bd6b4e8fa4df302f106db41e597ae2df8bb56
Add plumbing for scroll parent.

Plumbs the scroll parent information into the cc layer trees. These relationships are not yet used. (That task is accomplished here https://codereview.chromium.org/18191009/).

R=shawnsingh@chromium.org
BUG=254435

Review URL: https://chromiumcodereview.appspot.com/18133004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@219026 0039d316-1c4b-4281-b951-d872f2087c98
cc/layers/compositing_reasons.h
cc/layers/layer.cc
cc/layers/layer.h
cc/layers/layer_impl.cc
cc/layers/layer_impl.h
cc/trees/tree_synchronizer_unittest.cc
webkit/renderer/compositor_bindings/web_layer_impl.cc
webkit/renderer/compositor_bindings/web_layer_impl.h