Add GL_CHROMIUM_texture_mailbox entrypoints to wgc3d implementations

webkit/gpu/webgraphicscontext3d_in_process_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 "webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 #include <GLES2/gl2.h>
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
@@ skipping 1625 matching lines @@
   if (context_lost_callback_) {
     context_lost_callback_->onContextLost();
   }
 }
 
 DELEGATE_TO_GL_3(bindUniformLocationCHROMIUM, BindUniformLocationCHROMIUM,
                  WebGLId, WGC3Dint, const WGC3Dchar*)
 
 DELEGATE_TO_GL(shallowFlushCHROMIUM, ShallowFlushCHROMIUM)
 
+DELEGATE_TO_GL_1(genMailboxCHROMIUM, GenMailboxCHROMIUM, WGC3Dbyte*)
+DELEGATE_TO_GL_2(produceTextureCHROMIUM, ProduceTextureCHROMIUM,
+                 WGC3Denum, const WGC3Dbyte*)
+DELEGATE_TO_GL_2(consumeTextureCHROMIUM, ConsumeTextureCHROMIUM,
+                 WGC3Denum, const WGC3Dbyte*)
+
 }  // namespace gpu
 }  // namespace webkit