Remove unnecessary comments

content/renderer/render_thread_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/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 720 matching lines @@
   WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(swappedout_scheme);
   WebSecurityPolicy::registerURLSchemeAsEmptyDocument(swappedout_scheme);
 }
 
 void RenderThreadImpl::RecordUserMetrics(const std::string& action) {
   Send(new ViewHostMsg_UserMetricsRecordAction(action));
 }
 
 scoped_ptr<base::SharedMemory>
     RenderThreadImpl::HostAllocateSharedMemoryBuffer(uint32 size) {
-  //if (!size)
-  //  return scoped_ptr<base::SharedMemory>();
-
-//#if defined(OS_WIN)
-//  scoped_ptr<base::SharedMemory> shared_memory(new base::SharedMemory);
-//  if (!shared_memory->CreateAnonymous(size))
-//    return scoped_ptr<base::SharedMemory>();
-//
-//  return scoped_ptr<base::SharedMemory>(shared_memory.release());
-//#else
   base::SharedMemoryHandle handle;
   bool success;
   IPC::Message* message =
       new ChildProcessHostMsg_SyncAllocateSharedMemory(size, &handle);
 
   // Allow calling this from the compositor thread.
   if (MessageLoop::current() == message_loop())
     success = ChildThread::Send(message);
   else
     success = sync_message_filter()->Send(message);
 
   if (!success)
     return scoped_ptr<base::SharedMemory>();
 
   if (!base::SharedMemory::IsHandleValid(handle))
     return scoped_ptr<base::SharedMemory>();
 
   return scoped_ptr<base::SharedMemory>(new base::SharedMemory(handle, false));
-//#endif  // defined(OS_WIN)
 }
 
 void RenderThreadImpl::RegisterExtension(v8::Extension* extension) {
   WebScriptController::registerExtension(extension);
 }
 
 void RenderThreadImpl::ScheduleIdleHandler(int64 initial_delay_ms) {
   idle_notification_delay_in_ms_ = initial_delay_ms;
   idle_timer_.Stop();
   idle_timer_.Start(FROM_HERE,
@@ skipping 377 matching lines @@
 RenderThreadImpl::GetFileThreadMessageLoopProxy() {
   DCHECK(message_loop() == MessageLoop::current());
   if (!file_thread_.get()) {
     file_thread_.reset(new base::Thread("Renderer::FILE"));
     file_thread_->Start();
   }
   return file_thread_->message_loop_proxy();
 }
 
 }  // namespace content