Shrink texture uploader when not visible.

cc/texture_uploader.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 CC_TEXTURE_UPLOADER_H_
 #define CC_TEXTURE_UPLOADER_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 35 matching lines @@
     // image be a buffer for imageRect. This function will copy the region
     // corresponding to sourceRect to destOffset in this sub-image.
     void upload(const uint8* image,
                 const gfx::Rect& content_rect,
                 const gfx::Rect& source_rect,
                 const gfx::Vector2d& dest_offset,
                 GLenum format,
                 const gfx::Size& size);
 
     void flush();
+    void releaseCachedQueries();
 
 private:
     class Query {
     public:
         static scoped_ptr<Query> create(WebKit::WebGraphicsContext3D* context) { return make_scoped_ptr(new Query(context)); }
 
         virtual ~Query();
 
         void begin();
         void end();
@@ skipping 44 matching lines @@
 
     bool m_useShallowFlush;
     size_t m_numTextureUploadsSinceLastFlush;
 
     DISALLOW_COPY_AND_ASSIGN(TextureUploader);
 };
 
 }  // namespace cc
 
 #endif  // CC_TEXTURE_UPLOADER_H_