Animations: Register LinkHighlight content layer for animations

Source/web/LinkHighlight.cpp

 /*
  * Copyright (C) 2012 Google 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
@@ skipping 59 matching lines @@
     , m_owningWebViewImpl(owningWebViewImpl)
     , m_currentGraphicsLayer(0)
     , m_geometryNeedsUpdate(false)
     , m_isAnimating(false)
     , m_startTime(monotonicallyIncreasingTime())
 {
     ASSERT(m_node);
     ASSERT(owningWebViewImpl);
     WebCompositorSupport* compositorSupport = Platform::current()->compositorSupport();
     m_contentLayer = adoptPtr(compositorSupport->createContentLayer(this));
+    owningWebViewImpl->registerForAnimations(m_contentLayer->layer());
     m_clipLayer = adoptPtr(compositorSupport->createLayer());
     m_clipLayer->setTransformOrigin(WebFloatPoint3D());
     m_clipLayer->addChild(m_contentLayer->layer());
     m_contentLayer->layer()->setAnimationDelegate(this);

[loyso (OOO), 2015/04/24 03:26:54]

Note: The problem is that LayerAnimationController is not yet created at this
point. Alternatively we could move the setAnimationDelegate call later, right
after updateGeometry(). updateGeometry adds LinkHighlight's content layer to
parent GraphicsLayer calling cc::Layer::AddChild, cc::Layer::SetParent,
cc::Layer::SetLayerThreeHost, cc::Layer::RegisterForAnimation.

     m_contentLayer->layer()->setDrawsContent(true);
     m_contentLayer->layer()->setOpacity(1);
     m_geometryNeedsUpdate = true;
     updateGeometry();
 }
 
 LinkHighlight::~LinkHighlight()
 {
     clearGraphicsLayerLinkHighlightPointer();
     releaseResources();
@@ skipping 266 matching lines @@
     // Make sure we update geometry on the next callback from WebViewImpl::layout().
     m_geometryNeedsUpdate = true;
 }
 
 WebLayer* LinkHighlight::layer()
 {
     return clipLayer();
 }
 
 } // namespace blink