Revert "Revert 113250 - Add CommandBuffer::SetGetBuffer"

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.cc

 /*
  * Copyright (c) 2011 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 "native_client/src/shared/ppapi_proxy/plugin_ppb_graphics_3d.h"
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "native_client/src/shared/ppapi_proxy/command_buffer_nacl.h"
@@ skipping 194 matching lines @@
   return impl;
 }
 
 
 bool PluginGraphics3D::InitFromBrowserResource(PP_Resource res) {
   DebugPrintf("PluginGraphics3D::InitFromBrowserResource: "
               "resource=%"NACL_PRIu32"\n", res);
 
   // Create and initialize the objects required to issue GLES2 calls.
   command_buffer_.reset(new CommandBufferNacl(res, PluginCore::GetInterface()));
-  if (command_buffer_->Initialize(kRingBufferSize)) {
+  if (command_buffer_->Initialize()) {
     gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(command_buffer_.get()));
-    gpu::Buffer buffer = command_buffer_->GetRingBuffer();
-    DebugPrintf("PluginGraphics3D::InitFromBrowserResource: buffer size: %d\n",
-        buffer.size);
-    if (gles2_helper_->Initialize(buffer.size)) {
+    if (gles2_helper_->Initialize(kRingBufferSize)) {
       // Request id -1 to signify 'don't care'
       int32 transfer_buffer_id =
           command_buffer_->CreateTransferBuffer(kTransferBufferSize, -1);
       gpu::Buffer transfer_buffer =
           command_buffer_->GetTransferBuffer(transfer_buffer_id);
       if (transfer_buffer.ptr) {
         gles2_implementation_.reset(new gpu::gles2::GLES2Implementation(
             gles2_helper_.get(),
             transfer_buffer.size,
             transfer_buffer.ptr,
@@ skipping 41 matching lines @@
     &SetAttribs,
     &GetError,
     &ResizeBuffers,
     &SwapBuffs,
   };
   return &intf;
 }
 
 }  // namespace ppapi_proxy