GPU client side changes for GpuMemoryBuffers

gpu/command_buffer/client/gpu_memory_buffer_factory.cc

 // 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.
 
 #include "gpu/command_buffer/client/gpu_memory_buffer_factory.h"
 
 #include "base/logging.h"
 
 namespace gpu {
 
 namespace {
 GpuMemoryBuffer::Creator* g_gpu_memory_buffer_factory_ = NULL;
 }
 
+namespace gles2 {
+ImageManager* g_image_manager_ = NULL;
+} // namespace gpu
+
 const GpuMemoryBuffer::Creator& GetProcessDefaultGpuMemoryBufferFactory() {
   return *g_gpu_memory_buffer_factory_;
 }
 
 void SetProcessDefaultGpuMemoryBufferFactory(
     const GpuMemoryBuffer::Creator& factory) {
   DCHECK(g_gpu_memory_buffer_factory_ == NULL);
   g_gpu_memory_buffer_factory_ = new GpuMemoryBuffer::Creator(factory);
 }
 
+gles2::ImageManager* GetProcessDefaultImageManager() {
+  DCHECK(gles2::g_image_manager_ != NULL);
+  return gles2::g_image_manager_;
+}
+
+void SetProcessDefaultImageManager(gles2::ImageManager* image_manager) {
+  DCHECK(gles2::g_image_manager_ == NULL);
+  gles2::g_image_manager_ = image_manager;
+}
+
 }  // namespace gpu