Update a bunch of files to the new location of browser_thread.h

chrome/browser/download/download_manager.h

 // 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.
 //
 // The DownloadManager object manages the process of downloading, including
 // updates to the history system and providing the information for displaying
 // the downloads view in the Destinations tab. There is one DownloadManager per
 // active profile in Chrome.
 //
 // Download observers:
@@ skipping 22 matching lines @@
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_path.h"
 #include "base/observer_list.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/time.h"
 #include "base/weak_ptr.h"
-#include "chrome/browser/browser_thread.h"
 #include "chrome/browser/download/download_status_updater_delegate.h"
 #include "chrome/browser/ui/shell_dialogs.h"
+#include "content/browser/browser_thread.h"
 
 class DownloadFileManager;
 class DownloadHistory;
 class DownloadItem;
 class DownloadPrefs;
 class DownloadStatusUpdater;
 class GURL;
 class Profile;
 class ResourceDispatcherHost;
 class URLRequestContextGetter;
@@ skipping 329 matching lines @@
   // The "Save As" dialog box used to ask the user where a file should be
   // saved.
   scoped_refptr<SelectFileDialog> select_file_dialog_;
 
   scoped_ptr<OtherDownloadManagerObserver> other_download_manager_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadManager);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_MANAGER_H_