Have Frame::animation() return a reference

Source/core/rendering/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 494 matching lines @@
 }
 
 void CompositedLayerMapping::updateGraphicsLayerGeometry()
 {
     // If we haven't built z-order lists yet, wait until later.
     if (m_owningLayer->stackingNode()->isStackingContainer() && m_owningLayer->stackingNode()->zOrderListsDirty())
         return;
 
     // Set transform property, if it is not animating. We have to do this here because the transform
     // is affected by the layer dimensions.
-    if (!renderer()->animation()->isRunningAcceleratedAnimationOnRenderer(renderer(), CSSPropertyWebkitTransform))
+    if (!renderer()->animation().isRunningAcceleratedAnimationOnRenderer(renderer(), CSSPropertyWebkitTransform))
         updateTransform(renderer()->style());
 
     // Set opacity, if it is not animating.
-    if (!renderer()->animation()->isRunningAcceleratedAnimationOnRenderer(renderer(), CSSPropertyOpacity))
+    if (!renderer()->animation().isRunningAcceleratedAnimationOnRenderer(renderer(), CSSPropertyOpacity))
         updateOpacity(renderer()->style());
 
     if (RuntimeEnabledFeatures::cssCompositingEnabled())
         updateLayerBlendMode(renderer()->style());
 
     bool isSimpleContainer = isSimpleContainerCompositingLayer();
 
     m_owningLayer->updateDescendantDependentFlags();
 
     // m_graphicsLayer is the corresponding GraphicsLayer for this RenderLayer and its non-compositing
@@ skipping 1348 matching lines @@
 
 void CompositedLayerMapping::transitionFinished(CSSPropertyID property)
 {
     int animationId = m_animationProvider->getWebAnimationId(property);
     ASSERT(animationId);
     m_graphicsLayer->removeAnimation(animationId);
 }
 
 void CompositedLayerMapping::notifyAnimationStarted(const GraphicsLayer*, double time)
 {
-    renderer()->animation()->notifyAnimationStarted(renderer(), time);
+    renderer()->animation().notifyAnimationStarted(renderer(), time);
 }
 
 // This is used for the 'freeze' API, for testing only.
 void CompositedLayerMapping::suspendAnimations(double time)
 {
     m_graphicsLayer->suspendAnimations(time);
 }
 
 IntRect CompositedLayerMapping::compositedBounds() const
 {
@@ skipping 72 matching lines @@
     } else if (graphicsLayer == m_scrollingContentsLayer.get()) {
         name = "Scrolling Contents Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace WebCore