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

chrome/browser/background_mode_manager_linux.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 <unistd.h>
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/nix/xdg_util.h"
 #include "base/task.h"
 #include "chrome/browser/background_mode_manager.h"
-#include "chrome/browser/browser_thread.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/common/auto_start_linux.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
+#include "content/browser/browser_thread.h"b
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace {
 
 class DisableLaunchOnStartupTask : public Task {
  public:
   virtual void Run();
 };
 
@@ skipping 46 matching lines @@
     NOTREACHED() << "Failed to register launch on login.";
   }
 }
 
 string16 BackgroundModeManager::GetPreferencesMenuLabel() {
   string16 result = gtk_util::GetStockPreferencesMenuLabel();
   if (!result.empty())
     return result;
   return l10n_util::GetStringUTF16(IDS_PREFERENCES);
 }