Revert 171714 - Use an auxiliary list of animation controllers.

cc/layer.h

Index: cc/layer.h
diff --git a/cc/layer.h b/cc/layer.h
index 3d63e74db8f1c2b238f88f431d44e777c60cc948..91a7cdbcd94c76b89476ea9473909f1bd46f4f60 100644
--- a/cc/layer.h
+++ b/cc/layer.h
@@ -44,13 +44,21 @@ struct RenderingStats;
 
 // Base class for composited layers. Special layer types are derived from
 // this class.
-class CC_EXPORT Layer : public base::RefCounted<Layer> {
+class CC_EXPORT Layer : public base::RefCounted<Layer>, public LayerAnimationControllerClient {
 public:
     typedef std::vector<scoped_refptr<Layer> > LayerList;
 
     static scoped_refptr<Layer> create();
 
-    int id() const;
+    // LayerAnimationControllerClient implementation
+    virtual int id() const OVERRIDE;
+    virtual void setOpacityFromAnimation(float) OVERRIDE;
+    virtual float opacity() const OVERRIDE;
+    virtual void setTransformFromAnimation(const gfx::Transform&) OVERRIDE;
+    // A layer's transform operates layer space. That is, entirely in logical,
+    // non-page-scaled pixels (that is, they have page zoom baked in, but not page scale).
+    // The root layer is a special case -- it operates in physical pixels.
+    virtual const gfx::Transform& transform() const OVERRIDE;
 
     Layer* rootLayer();
     Layer* parent() { return m_parent; }
@@ -91,7 +99,6 @@ public:
     virtual bool needsDisplay() const;
 
     void setOpacity(float);
-    float opacity() const;
     bool opacityIsAnimating() const;
 
     void setFilters(const WebKit::WebFilterOperations&);
@@ -121,7 +128,6 @@ public:
     const gfx::Transform& sublayerTransform() const { return m_sublayerTransform; }
 
     void setTransform(const gfx::Transform&);
-    const gfx::Transform& transform() const;
     bool transformIsAnimating() const;
 
     DrawProperties<Layer, RenderSurface>& drawProperties() { return m_drawProperties; }
@@ -261,8 +267,8 @@ public:
     void resumeAnimations(double monotonicTime);
 
     LayerAnimationController* layerAnimationController() { return m_layerAnimationController.get(); }
-    void setLayerAnimationController(scoped_refptr<LayerAnimationController>);
-    scoped_refptr<LayerAnimationController> releaseLayerAnimationController();
+    void setLayerAnimationController(scoped_ptr<LayerAnimationController>);
+    scoped_ptr<LayerAnimationController> releaseLayerAnimationController();
 
     void setLayerAnimationDelegate(WebKit::WebAnimationDelegate* layerAnimationDelegate) { m_layerAnimationDelegate = layerAnimationDelegate; }
 
@@ -333,7 +339,7 @@ private:
     // updated via setLayerTreeHost() if a layer moves between trees.
     LayerTreeHost* m_layerTreeHost;
 
-    scoped_refptr<LayerAnimationController> m_layerAnimationController;
+    scoped_ptr<LayerAnimationController> m_layerAnimationController;
 
     // Layer properties.
     gfx::Size m_bounds;
@@ -351,6 +357,7 @@ private:
     gfx::PointF m_anchorPoint;
     SkColor m_backgroundColor;
     std::string m_debugName;
+    float m_opacity;
     skia::RefPtr<SkImageFilter> m_filter;
     WebKit::WebFilterOperations m_filters;
     WebKit::WebFilterOperations m_backgroundFilters;
@@ -367,6 +374,7 @@ private:
     bool m_drawCheckerboardForMissingTiles;
     bool m_forceRenderSurface;
 
+    gfx::Transform m_transform;
     gfx::Transform m_sublayerTransform;
 
     // Replica layer used for reflections.