Fix for jankiness in some accelerated 2D canvas demos: If there is already a...

gpu/command_buffer/client/gles2_implementation_autogen.h

 // Copyright (c) 2010 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.
 
 // This file is auto-generated. DO NOT EDIT!
 
 // This file is included by gles2_implementation.h to declare the
 // GL api functions.
 #ifndef GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_AUTOGEN_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_AUTOGEN_H_
@@ skipping 861 matching lines @@
 
 void UnmapBufferSubDataCHROMIUM(const void* mem);
 
 void* MapTexSubImage2DCHROMIUM(
     GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width,
     GLsizei height, GLenum format, GLenum type, GLenum access);
 
 void UnmapTexSubImage2DCHROMIUM(const void* mem);
 
 void CopyTextureToParentTextureCHROMIUM(
-    GLuint client_child_id, GLuint client_parent_id) {
-  helper_->CopyTextureToParentTextureCHROMIUM(
-      client_child_id, client_parent_id);
-}
+    GLuint client_child_id, GLuint client_parent_id);
 
 void ResizeCHROMIUM(GLuint width, GLuint height) {
   helper_->ResizeCHROMIUM(width, height);
 }
 
 const GLchar* GetRequestableExtensionsCHROMIUM();
 
 void RequestExtensionCHROMIUM(const char* extension);
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_AUTOGEN_H_