Change WebLayer::addAnimation to transfer ownership of WebAnimation.

Source/web/tests/GraphicsLayerTest.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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 76 matching lines @@
 };
 
 TEST_F(GraphicsLayerTest, updateLayerPreserves3DWithAnimations)
 {
     ASSERT_FALSE(m_platformLayer->hasActiveAnimation());
 
     OwnPtr<WebFloatAnimationCurve> curve = adoptPtr(Platform::current()->compositorSupport()->createFloatAnimationCurve());
     curve->add(WebFloatKeyframe(0.0, 0.0));
     OwnPtr<WebAnimation> floatAnimation(adoptPtr(Platform::current()->compositorSupport()->createAnimation(*curve, WebAnimation::TargetPropertyOpacity)));
     int animationId = floatAnimation->id();
-    ASSERT_TRUE(m_platformLayer->addAnimation(floatAnimation.get()));
+    ASSERT_TRUE(m_platformLayer->addAnimation(floatAnimation.leakPtr()));
 
     ASSERT_TRUE(m_platformLayer->hasActiveAnimation());
 
     m_graphicsLayer->setPreserves3D(true);
 
     m_platformLayer = m_graphicsLayer->platformLayer();
     ASSERT_TRUE(m_platformLayer);
 
     ASSERT_TRUE(m_platformLayer->hasActiveAnimation());
     m_platformLayer->removeAnimation(animationId);
@@ skipping 55 matching lines @@
     EXPECT_FALSE(m_graphicsLayer->contentsLayer());
 
     m_graphicsLayer->setContentsToSolidColor(Color::white);
     EXPECT_TRUE(m_graphicsLayer->contentsLayer());
 
     m_graphicsLayer->setContentsToSolidColor(Color());
     EXPECT_FALSE(m_graphicsLayer->contentsLayer());
 }
 
 } // namespace