Clipping textured quads explicitly without scissoring

cc/texture_draw_quad.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_DRAW_QUAD_H_
 #define CC_TEXTURE_DRAW_QUAD_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/cc_export.h"
 #include "cc/draw_quad.h"
@@ skipping 22 matching lines @@
               bool premultiplied_alpha,
               const gfx::RectF& uv_rect,
               bool flipped);
 
   unsigned resource_id;
   bool premultiplied_alpha;
   gfx::RectF uv_rect;
   bool flipped;
 
   static const TextureDrawQuad* MaterialCast(const DrawQuad*);
+
+  bool PerformClipping();
  private:
   TextureDrawQuad();
 };
 
 }
 
 #endif  // CC_TEXTURE_DRAW_QUAD_H_