cc: Refactor content scale/bounds into draw properties

cc/layer_tree_host_unittest.cc

Index: cc/layer_tree_host_unittest.cc
diff --git a/cc/layer_tree_host_unittest.cc b/cc/layer_tree_host_unittest.cc
index 7add7caf714d43f12eb9a779f7ad4971d7ad5b73..13fce9ec990211641cf340148b186931a9b25a8c 100644
--- a/cc/layer_tree_host_unittest.cc
+++ b/cc/layer_tree_host_unittest.cc
@@ -1221,9 +1221,15 @@ class NoScaleContentLayer : public ContentLayer {
 public:
     static scoped_refptr<NoScaleContentLayer> create(ContentLayerClient* client) { return make_scoped_refptr(new NoScaleContentLayer(client)); }
 
-    virtual gfx::Size contentBounds() const OVERRIDE { return bounds(); }
-    virtual float contentsScaleX() const OVERRIDE { return 1.0; }
-    virtual float contentsScaleY() const OVERRIDE { return 1.0; }
+    virtual void didUpdateBounds() OVERRIDE
+    {
+        Layer::didUpdateBounds();
+    }
+
+    virtual void updateContentsScale(float idealContentsScale)
+    {
+        Layer::updateContentsScale(idealContentsScale);
+    }
 
 private:
     explicit NoScaleContentLayer(ContentLayerClient* client)