[cc] Evict UIResources when the renderer is not visible

cc/trees/thread_proxy.h

 // 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.
 
 #ifndef CC_TREES_THREAD_PROXY_H_
 #define CC_TREES_THREAD_PROXY_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 103 matching lines @@
   ThreadProxy(LayerTreeHost* layer_tree_host,
               scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner);
 
   struct BeginFrameAndCommitState {
     BeginFrameAndCommitState();
     ~BeginFrameAndCommitState();
 
     base::TimeTicks monotonic_frame_begin_time;
     scoped_ptr<ScrollAndScaleSet> scroll_info;
     size_t memory_allocation_limit_bytes;
+    bool evicted_ui_resources;
   };
 
   // Called on main thread.
   void BeginFrameOnMainThread(
       scoped_ptr<BeginFrameAndCommitState> begin_frame_state);
   void DidCommitAndDrawFrame();
   void DidCompleteSwapBuffers();
   void SetAnimationEvents(scoped_ptr<AnimationEventsVector> queue,
                           base::Time wall_clock_time);
   void DoCreateAndInitializeOutputSurface();
@@ skipping 135 matching lines @@
   // activation_duration_history_.
   base::TimeTicks begin_frame_sent_to_main_thread_time_;
   base::TimeTicks commit_complete_time_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadProxy);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_THREAD_PROXY_H_