cc: Rename visible_content_rect and content stuff on quads.

cc/layers/layer.h

Index: cc/layers/layer.h
diff --git a/cc/layers/layer.h b/cc/layers/layer.h
index 701db9c1e5ae5a82fc76ed27badc30dff8941515..aa2429ac119ebfdc1baf0862ada0e5f1aa4b7298 100644
--- a/cc/layers/layer.h
+++ b/cc/layers/layer.h
@@ -254,8 +254,8 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
   gfx::Rect drawable_content_rect() const {
     return draw_properties_.drawable_content_rect;
   }
-  gfx::Rect visible_content_rect() const {
-    return draw_properties_.visible_content_rect;
+  gfx::Rect visible_layer_rect() const {
+    return draw_properties_.visible_layer_rect;
   }
   Layer* render_target() {
     DCHECK(!draw_properties_.render_target ||
@@ -424,8 +424,6 @@ class CC_EXPORT Layer : public base::RefCounted<Layer>,
   void RemoveLayerAnimationEventObserver(
       LayerAnimationEventObserver* animation_observer);
 
-  virtual SimpleEnclosedRegion VisibleContentOpaqueRegion() const;
-
   virtual ScrollbarLayerInterface* ToScrollbarLayer();
 
   virtual skia::RefPtr<SkPicture> GetPicture() const;