Add support for GL_CHROMIUM_pixel_transfer_buffer_object.

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 1618 matching lines @@
 }
 
 DELEGATE_TO_GL_1R(isVertexArrayOES, IsVertexArrayOES, WebGLId, WGC3Dboolean)
 DELEGATE_TO_GL_1(bindVertexArrayOES, BindVertexArrayOES, WebGLId)
 
 DELEGATE_TO_GL_2(bindTexImage2DCHROMIUM, BindTexImage2DCHROMIUM,
                  WGC3Denum, WGC3Dint)
 DELEGATE_TO_GL_2(releaseTexImage2DCHROMIUM, ReleaseTexImage2DCHROMIUM,
                  WGC3Denum, WGC3Dint)
 
+void* WebGraphicsContext3DCommandBufferImpl::mapBufferCHROMIUM(
+    WGC3Denum target, WGC3Denum access) {
+  return gl_->MapBufferCHROMIUM(target, access);
+}
+
+WGC3Dboolean WebGraphicsContext3DCommandBufferImpl::unmapBufferCHROMIUM(
+    WGC3Denum target) {
+  return gl_->UnmapBufferCHROMIUM(target);
+}
+
 GrGLInterface* WebGraphicsContext3DCommandBufferImpl::onCreateGrGLInterface() {
   return webkit_glue::CreateCommandBufferSkiaGLBinding();
 }
 
 namespace {
 
 WGC3Denum convertReason(gpu::error::ContextLostReason reason) {
   switch (reason) {
   case gpu::error::kGuilty:
     return GL_GUILTY_CONTEXT_RESET_ARB;
@@ skipping 23 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