Use WeakPtr for posting cc tasks to main thread

cc/layer_tree_host_unittest_animation.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layer_tree_host.h"
 
 #include "cc/animation_curve.h"
 #include "cc/layer.h"
 #include "cc/layer_animation_controller.h"
 #include "cc/layer_impl.h"
@@ skipping 68 matching lines @@
 // handling the case where setNeedsAnimate() is called inside the begin frame
 // flow.
 class LayerTreeHostAnimationTestSetNeedsAnimateInsideAnimationCallback :
     public LayerTreeHostAnimationTest {
  public:
   LayerTreeHostAnimationTestSetNeedsAnimateInsideAnimationCallback()
       : num_animates_(0) {
   }
 
   virtual void beginTest() OVERRIDE {
-    postSetNeedsAnimateToMainThread();
+    postSetNeedsCommitToMainThread();
   }
 
   virtual void animate(base::TimeTicks) OVERRIDE {
     if (!num_animates_) {
       m_layerTreeHost->setNeedsAnimate();
       num_animates_++;
       return;
     }
     endTest();
   }
@@ skipping 432 matching lines @@
 
  private:
   int num_commit_complete_;
   int num_draw_layers_;
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostAnimationTestContinuousAnimate)
 
 }  // namespace
 }  // namespace cc