Move BrowserThread to content namespace.

content/browser/renderer_host/file_utilities_message_filter.cc

 // Copyright (c) 2010 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/file_utilities_message_filter.h"
 
 #include "base/file_util.h"
 #include "content/browser/child_process_security_policy.h"
 #include "content/common/file_utilities_messages.h"
 
+using content::BrowserThread;
+
 FileUtilitiesMessageFilter::FileUtilitiesMessageFilter(int process_id)
     : process_id_(process_id) {
 }
 
 FileUtilitiesMessageFilter::~FileUtilitiesMessageFilter() {
 }
 
 void FileUtilitiesMessageFilter::OverrideThreadForMessage(
     const IPC::Message& message,
     BrowserThread::ID* thread) {
@@ skipping 77 matching lines @@
   if (!DuplicateHandle(GetCurrentProcess(), file_handle,
                        peer_handle(), result, 0, false,
                        DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
     // file_handle is closed whether or not DuplicateHandle succeeds.
     *result = INVALID_HANDLE_VALUE;
   }
 #else
   *result = base::FileDescriptor(file_handle, true);
 #endif
 }