Implement transform/clip support for Android WebView.

cc/test/pixel_test.cc

Index: cc/test/pixel_test.cc
diff --git a/cc/test/pixel_test.cc b/cc/test/pixel_test.cc
index 0885c76bf77ed565142eec5500cc3ff5f7cdfbd8..45ecfd069148d6dfc6ce00061295092688944b5c 100644
--- a/cc/test/pixel_test.cc
+++ b/cc/test/pixel_test.cc
@@ -27,8 +27,8 @@ class PixelTest::PixelTestRendererClient : public RendererClient {
       : device_viewport_size_(device_viewport_size) {}
 
   // RendererClient implementation.
-  virtual gfx::Size DeviceViewportSize() const OVERRIDE {
-    return device_viewport_size_;
+  virtual gfx::Rect DeviceViewport() const OVERRIDE {
+    return gfx::Rect(device_viewport_size_);
   }
   virtual float DeviceScaleFactor() const OVERRIDE {
     return 1.f;