Move base/thread.h to base/threading, fix up callers to use the new location....

chrome/browser/file_system/file_system_dispatcher_host.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 "chrome/browser/file_system/file_system_dispatcher_host.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
-#include "base/thread.h"
+#include "base/threading/thread.h"
 #include "base/time.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/renderer_host/browser_render_process_host.h"
 #include "chrome/common/net/url_request_context_getter.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/render_messages_params.h"
 #include "googleurl/src/gurl.h"
 #include "net/url_request/url_request_context.h"
@@ skipping 219 matching lines @@
       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE),
       context_);
   operations_.AddWithID(operation, request_id);
   return operation;
 }
 
 void FileSystemDispatcherHost::UnregisterOperation(int request_id) {
   DCHECK(operations_.Lookup(request_id));
   operations_.Remove(request_id);
 }