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

chrome/browser/download/download_request_limiter.cc

 // Copyright (c) 2011 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_request_limiter.h"
 
 #include "base/stl_util-inl.h"
-#include "chrome/browser/browser_thread.h"
 #include "chrome/browser/download/download_request_infobar_delegate.h"
-#include "chrome/browser/tab_contents/navigation_controller.h"
-#include "chrome/browser/tab_contents/navigation_entry.h"
-#include "chrome/browser/tab_contents/tab_contents_delegate.h"
 #include "chrome/browser/tab_contents/tab_util.h"
-#include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/common/notification_source.h"
+#include "content/browser/browser_thread.h"
+#include "content/browser/tab_contents/navigation_controller.h"
+#include "content/browser/tab_contents/navigation_entry.h"
+#include "content/browser/tab_contents/tab_contents_delegate.h"
+#include "content/browser/tab_contents/tab_contents.h"
 
 // TabDownloadState ------------------------------------------------------------
 
 DownloadRequestLimiter::TabDownloadState::TabDownloadState(
     DownloadRequestLimiter* host,
     NavigationController* controller,
     NavigationController* originating_controller)
     : host_(host),
       controller_(controller),
       status_(DownloadRequestLimiter::ALLOW_ONE_DOWNLOAD),
@@ skipping 287 matching lines @@
 
 void DownloadRequestLimiter::Remove(TabDownloadState* state) {
   DCHECK(ContainsKey(state_map_, state->controller()));
   state_map_.erase(state->controller());
   delete state;
 }
 
 // static
 DownloadRequestLimiter::TestingDelegate* DownloadRequestLimiter::delegate_ =
     NULL;