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 87d47e060d734180dfdfc68f8dd6244a431e3a53..aa65a21414671db2097893ab4f56407e63b18f9f 100644
--- a/cc/layer_tree_host_unittest.cc
+++ b/cc/layer_tree_host_unittest.cc
@@ -1220,9 +1220,15 @@ 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 setIdealContentsScale(float idealContentsScale)
+    {
+        Layer::setIdealContentsScale(idealContentsScale);
+    }
 
 private:
     explicit NoScaleContentLayer(ContentLayerClient* client)