Specify the rect invalidated by SetLayerTransform.

content/renderer/pepper/pepper_graphics_2d_host.h

 // Copyright (c) 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 CONTENT_RENDERER_PEPPER_PEPPER_GRAPHICS_2D_HOST_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_GRAPHICS_2D_HOST_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 120 matching lines @@
 
   // If |old_image_data| is not NULL, a previous used ImageData object will be
   // reused.  This is used by ReplaceContents.
   int32_t Flush(PP_Resource* old_image_data);
 
   // Called internally to execute the different queued commands. The
   // parameters to these functions will have already been validated. The last
   // rect argument will be filled by each function with the area affected by
   // the update that requires invalidation. If there were no pixels changed,
   // this rect can be untouched.
-  void ExecuteTransform(const float& scale, const gfx::PointF& translate);
+  void ExecuteTransform(const float& scale,
+                        const gfx::PointF& translate,
+                        gfx::Rect* invalidated_rect);
   void ExecutePaintImageData(PPB_ImageData_Impl* image,
                              int x,
                              int y,
                              const gfx::Rect& src_rect,
                              gfx::Rect* invalidated_rect);
   void ExecuteScroll(const gfx::Rect& clip,
                      int dx,
                      int dy,
                      gfx::Rect* invalidated_rect);
   void ExecuteReplaceContents(PPB_ImageData_Impl* image,
@@ skipping 69 matching lines @@
   std::unique_ptr<cc::SharedBitmap> cached_bitmap_;
   gfx::Size cached_bitmap_size_;
 
   friend class PepperGraphics2DHostTest;
   DISALLOW_COPY_AND_ASSIGN(PepperGraphics2DHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_GRAPHICS_2D_HOST_H_