gpu: Add CHROMIUM_copy_image extension.

cc/test/test_web_graphics_context_3d.h

 // Copyright 2013 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_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_
 #define CC_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 62 matching lines @@
                                           GLint level,
                                           GLint xoffset,
                                           GLint yoffset,
                                           GLsizei width,
                                           GLsizei height,
                                           GLenum format,
                                           GLenum type,
                                           const void* pixels) {}
   virtual void waitAsyncTexImage2DCHROMIUM(GLenum target) {}
   virtual void releaseTexImage2DCHROMIUM(GLenum target, GLint image_id) {}
+  virtual void copyImageSubDataCHROMIUM(GLint source_image_id,
+                                        GLint dest_texture_id,
+                                        GLint xoffset,
+                                        GLint yoffset,
+                                        GLint x,
+                                        GLint y,
+                                        GLsizei width,
+                                        GLsizei height,
+                                        GLint in_fence_id,
+                                        GLint out_fence_id) {}
   virtual void framebufferRenderbuffer(GLenum target,
                                        GLenum attachment,
                                        GLenum renderbuffertarget,
                                        GLuint renderbuffer) {}
   virtual void framebufferTexture2D(GLenum target,
                                     GLenum attachment,
                                     GLenum textarget,
                                     GLuint texture,
                                     GLint level) {}
   virtual void renderbufferStorage(GLenum target,
@@ skipping 392 matching lines @@
 
   scoped_refptr<Namespace> namespace_;
   static Namespace* shared_namespace_;
 
   base::WeakPtrFactory<TestWebGraphicsContext3D> weak_ptr_factory_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_