gpu: Reuse existing code for shared memory allocation.

content/browser/renderer_host/render_message_filter.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/browser/renderer_host/render_message_filter.h"
 
 #include <errno.h>
 #include <string.h>
 
 #include <map>
@@ skipping 322 matching lines @@
       reply, result->font_data_size, handle, result->font_id);
   Send(reply);
 }
 
 #endif  // defined(OS_MACOSX)
 
 void RenderMessageFilter::AllocateSharedMemoryOnFileThread(
     uint32_t buffer_size,
     IPC::Message* reply_msg) {
   base::SharedMemoryHandle handle;
-  ChildProcessHostImpl::AllocateSharedMemory(buffer_size, PeerHandle(),
-                                             &handle);
+  ChildProcessHostImpl::AllocateSharedMemory(buffer_size, &handle);
   ChildProcessHostMsg_SyncAllocateSharedMemory::WriteReplyParams(reply_msg,
                                                                  handle);
   Send(reply_msg);
 }
 
 void RenderMessageFilter::OnAllocateSharedMemory(uint32_t buffer_size,
                                                  IPC::Message* reply_msg) {
   BrowserThread::PostTask(
       BrowserThread::FILE_USER_BLOCKING, FROM_HERE,
       base::Bind(&RenderMessageFilter::AllocateSharedMemoryOnFileThread, this,
@@ skipping 330 matching lines @@
 void RenderMessageFilter::OnDeletedGpuMemoryBuffer(
     gfx::GpuMemoryBufferId id,
     const gpu::SyncToken& sync_token) {
   DCHECK(BrowserGpuMemoryBufferManager::current());
 
   BrowserGpuMemoryBufferManager::current()->ChildProcessDeletedGpuMemoryBuffer(
       id, PeerHandle(), render_process_id_, sync_token);
 }
 
 }  // namespace content