cc: Improve texture per second calculation and overhead

cc/texture_uploader.h

Index: cc/texture_uploader.h
diff --git a/cc/texture_uploader.h b/cc/texture_uploader.h
index 073478364adb20b69f73c9945c8e6734451f88fe..c317f051b4c3022cf94fd77d1dad58db1d977463 100644
--- a/cc/texture_uploader.h
+++ b/cc/texture_uploader.h
@@ -9,7 +9,7 @@
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/scoped_ptr_deque.h"
-#include <deque>
+#include <set>
 #include "third_party/khronos/GLES2/gl2.h"
 
 namespace WebKit {
@@ -87,7 +87,7 @@ private:
     WebKit::WebGraphicsContext3D* m_context;
     ScopedPtrDeque<Query> m_pendingQueries;
     ScopedPtrDeque<Query> m_availableQueries;
-    std::deque<double> m_texturesPerSecondHistory;
+    std::multiset<double> m_texturesPerSecondHistory;
     size_t m_numBlockingTextureUploads;
 
     bool m_useMapTexSubImage;