Add a new parameter dest_type to the GL_CHROMIUM_copy_texture extension.

content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.cc

 // 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.
 
 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 
 #include "third_party/khronos/GLES2/gl2.h"
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
@@ skipping 1584 matching lines @@
   gl_->DeleteQueriesEXT(1, &query);
 }
 
 DELEGATE_TO_GL_1R(isQueryEXT, IsQueryEXT, WebGLId, WGC3Dboolean)
 DELEGATE_TO_GL_2(beginQueryEXT, BeginQueryEXT, WGC3Denum, WebGLId)
 DELEGATE_TO_GL_1(endQueryEXT, EndQueryEXT, WGC3Denum)
 DELEGATE_TO_GL_3(getQueryivEXT, GetQueryivEXT, WGC3Denum, WGC3Denum, WGC3Dint*)
 DELEGATE_TO_GL_3(getQueryObjectuivEXT, GetQueryObjectuivEXT,
                  WebGLId, WGC3Denum, WGC3Duint*)
 
-DELEGATE_TO_GL_5(copyTextureCHROMIUM, CopyTextureCHROMIUM,  WGC3Denum,
-                 WebGLId, WebGLId, WGC3Dint, WGC3Denum);
+DELEGATE_TO_GL_6(copyTextureCHROMIUM, CopyTextureCHROMIUM,  WGC3Denum,
+                 WebGLId, WebGLId, WGC3Dint, WGC3Denum, WGC3Denum);
+// This copyTextureCHROMIUM(...) has five parameters and delegates the call to
+// CopyTextureCHROMIUM(...) with the sixth parameter set to GL_UNSIGNED_BYTE
+// to bridge the parameter differences.

[Ken Russell (switch to Gerrit), 2013/04/12 01:55:29]

Please add a line like:

TODO(jun.a.jiang): remove once the old copyTextureCHROMIUM is no longer being
called.

+void WebGraphicsContext3DCommandBufferImpl::copyTextureCHROMIUM(
+    WGC3Denum target, WebGLId source_id, WebGLId dest_id, WGC3Dint level,
+    WGC3Denum internal_format) {
+  gl_->CopyTextureCHROMIUM(target, source_id, dest_id, level, internal_format,
+                           GL_UNSIGNED_BYTE);
+}
 
 DELEGATE_TO_GL_3(bindUniformLocationCHROMIUM, BindUniformLocationCHROMIUM,
                  WebGLId, WGC3Dint, const WGC3Dchar*)
 
 DELEGATE_TO_GL(shallowFlushCHROMIUM,ShallowFlushCHROMIUM);
 
 DELEGATE_TO_GL_1(waitSyncPoint, WaitSyncPointCHROMIUM, GLuint)
 
 void WebGraphicsContext3DCommandBufferImpl::genMailboxCHROMIUM(
     WGC3Dbyte* name) {
@@ skipping 127 matching lines @@
 
 void WebGraphicsContext3DCommandBufferImpl::OnErrorMessage(
     const std::string& message, int id) {
   if (error_message_callback_) {
     WebKit::WebString str = WebKit::WebString::fromUTF8(message.c_str());
     error_message_callback_->onErrorMessage(str, id);
   }
 }
 
 }  // namespace content