Creates the WebCompositorOutputSurface, which is the new mechanism for rendering interactions between the compositor and RenderWidgetHost.

As part of this, we plumb vsync information to the compositor.

The new IPC::ForwardingMessageFilter is modified to have route-specific handlers rather than a global handler. This simplifies message routing considerably.

BUG=129674

Review URL: https://chromiumcodereview.appspot.com/10798006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@151387 0039d316-1c4b-4281-b951-d872f2087c98
15 files changed