CC: Fix missing swap-used-incomplete-tile updates

cc/test/layer_tree_test.cc

 // Copyright 2011 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/test/layer_tree_test.h"
 
 #include "base/command_line.h"
 #include "cc/animation/animation.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/animation/layer_animation_controller.h"
@@ skipping 99 matching lines @@
     bool result = LayerTreeHostImpl::SwapBuffers(frame);
     test_hooks_->SwapBuffersOnThread(this, result);
     return result;
   }
 
   virtual void OnSwapBuffersComplete(const CompositorFrameAck* ack) OVERRIDE {
     LayerTreeHostImpl::OnSwapBuffersComplete(ack);
     test_hooks_->SwapBuffersCompleteOnThread(this);
   }
 
+  virtual void UpdateVisibleTiles() OVERRIDE {
+    LayerTreeHostImpl::UpdateVisibleTiles();
+    test_hooks_->UpdateVisibleTilesOnThread(this);
+  }
+
   virtual void NotifyReadyToActivate() OVERRIDE {
     if (block_notify_ready_to_activate_for_testing_)
       notify_ready_to_activate_was_blocked_ = true;
     else
       client_->NotifyReadyToActivate();
   }
 
   virtual void BlockNotifyReadyToActivateForTesting(bool block) OVERRIDE {
     block_notify_ready_to_activate_for_testing_ = block;
     if (!block && notify_ready_to_activate_was_blocked_) {
@@ skipping 516 matching lines @@
 
 scoped_refptr<cc::ContextProvider> LayerTreeTest::
     OffscreenContextProviderForCompositorThread() {
   if (!compositor_thread_contexts_.get() ||
       compositor_thread_contexts_->DestroyedOnMainThread())
     compositor_thread_contexts_ = TestContextProvider::Create();
   return compositor_thread_contexts_;
 }
 
 }  // namespace cc