cc: Improve texture per second calculation and overhead

cc/ThrottledTextureUploader.h

 // 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.
 
 #ifndef ThrottledTextureUploader_h
 #define ThrottledTextureUploader_h
 
 #include "TextureUploader.h"
 
 #include "base/basictypes.h"
-#include <deque>
+#include <set>
 #include <wtf/Deque.h>
 
 namespace WebKit {
 class WebGraphicsContext3D;
 }
 
 namespace cc {
 
 class ThrottledTextureUploader : public TextureUploader {
 public:
@@ skipping 36 matching lines @@
 
     ThrottledTextureUploader(WebKit::WebGraphicsContext3D*);
 
     void beginQuery();
     void endQuery();
     void processQueries();
 
     WebKit::WebGraphicsContext3D* m_context;
     Deque<OwnPtr<Query> > m_pendingQueries;
     Deque<OwnPtr<Query> > m_availableQueries;
-    std::deque<double> m_texturesPerSecondHistory;
+    std::multiset<double> m_texturesPerSecondHistory;
+    int m_historyRemovalCount;
     size_t m_numBlockingTextureUploads;
 
     DISALLOW_COPY_AND_ASSIGN(ThrottledTextureUploader);
 };
 
 }
 
 #endif