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

chrome/browser/download/download_item.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/download/download_item.h"
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/stringprintf.h"
 #include "base/timer.h"
 #include "base/utf_string_conversions.h"
 #include "net/base/net_util.h"
-#include "chrome/browser/browser_thread.h"
 #include "chrome/browser/download/download_extensions.h"
 #include "chrome/browser/download/download_file_manager.h"
 #include "chrome/browser/download/download_history.h"
 #include "chrome/browser/download/download_manager.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/download/download_util.h"
 #include "chrome/browser/history/download_create_info.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/pref_names.h"
+#include "content/browser/browser_thread.h"
 #include "ui/base/l10n/l10n_util.h"
 
 // A DownloadItem normally goes through the following states:
 //      * Created (when download starts)
 //      * Made visible to consumers (e.g. Javascript) after the
 //        destination file has been determined.
 //      * Entered into the history database.
 //      * Made visible in the download shelf.
 //      * All data is received.  Note that the actual data download occurs
 //        in parallel with the above steps, but until those steps are
@@ skipping 571 matching lines @@
         target_name_.value().c_str(),
         full_path().value().c_str());
   } else {
     description += base::StringPrintf(" url = \"%s\"", url().spec().c_str());
   }
 
   description += " }";
 
   return description;
 }