Add a new parameter dest_type to the GL_CHROMIUM_copy_texture extension.

content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.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_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 #define CONTENT_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 554 matching lines @@
   virtual WGC3Dboolean isQueryEXT(WGC3Duint query);
   virtual void beginQueryEXT(WGC3Denum target, WebGLId query);
   virtual void endQueryEXT(WGC3Denum target);
   virtual void getQueryivEXT(
       WGC3Denum target, WGC3Denum pname, WGC3Dint* params);
   virtual void getQueryObjectuivEXT(
       WebGLId query, WGC3Denum pname, WGC3Duint* params);
 
   virtual void copyTextureCHROMIUM(WGC3Denum target, WebGLId source_id,
                                    WebGLId dest_id, WGC3Dint level,
-                                   WGC3Denum internal_format);
+                                   WGC3Denum internal_format,
+                                   WGC3Denum dest_type);

[Ken Russell (switch to Gerrit), 2013/04/08 18:28:52]

Please see my earlier comments. In order to land this patch without breaking the
repository you'll need to (1) add a new overload of copyTextureCHROMIUM in the
subclasses; (2) add the new overload into WebGraphicsContext3D in the Blink
repository, switch over all code to call it, and delete the old overload; and
(3) delete the old copyTextureCHROMIUM overload.

 
   virtual void bindUniformLocationCHROMIUM(WebGLId program, WGC3Dint location,
                                            const WGC3Dchar* uniform);
 
   virtual void shallowFlushCHROMIUM();
 
   virtual void genMailboxCHROMIUM(WGC3Dbyte* mailbox);
   virtual void produceTextureCHROMIUM(WGC3Denum target,
                                       const WGC3Dbyte* mailbox);
   virtual void consumeTextureCHROMIUM(WGC3Denum target,
@@ skipping 178 matching lines @@
   gpu::gles2::GLES2Interface* trace_gl_;
   Error last_error_;
   int frame_number_;
   bool bind_generates_resources_;
   bool use_echo_for_swap_ack_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_