cc: Add scheduler support for invalidating content on impl thread.

cc/trees/proxy_impl.h

 // Copyright 2015 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.
 
 #ifndef CC_TREES_PROXY_IMPL_H_
 #define CC_TREES_PROXY_IMPL_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 85 matching lines @@
   void WillBeginImplFrame(const BeginFrameArgs& args) override;
   void DidFinishImplFrame() override;
   void ScheduledActionSendBeginMainFrame(const BeginFrameArgs& args) override;
   DrawResult ScheduledActionDrawIfPossible() override;
   DrawResult ScheduledActionDrawForced() override;
   void ScheduledActionCommit() override;
   void ScheduledActionActivateSyncTree() override;
   void ScheduledActionBeginCompositorFrameSinkCreation() override;
   void ScheduledActionPrepareTiles() override;
   void ScheduledActionInvalidateCompositorFrameSink() override;
+  void ScheduledActionPerformImplSideInvalidation() override;
   void SendBeginMainFrameNotExpectedSoon() override;
 
   DrawResult DrawInternal(bool forced_draw);
 
   bool IsImplThread() const;
   bool IsMainThreadBlocked() const;
   base::SingleThreadTaskRunner* MainThreadTaskRunner();
 
   const int layer_tree_host_id_;
 
@@ skipping 29 matching lines @@
 
   // Used to post tasks to ProxyMain on the main thread.
   base::WeakPtr<ProxyMain> proxy_main_weak_ptr_;
 
   DISALLOW_COPY_AND_ASSIGN(ProxyImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_PROXY_IMPL_H_