Use a direct include of the message_loop header in chrome/browser/, part 7.

chrome/browser/importer/firefox_importer_browsertest.cc

 // Copyright (c) 2013 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 "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/stl_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/importer/external_process_importer_host.h"
 #include "chrome/browser/importer/importer_progress_observer.h"
 #include "chrome/browser/importer/importer_unittest_utils.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 269 matching lines @@
 }
 
 IN_PROC_BROWSER_TEST_F(FirefoxProfileImporterBrowserTest,
                        MAYBE_IMPORTER(Firefox35Importer)) {
   bool import_search_engines = false;
   scoped_refptr<Firefox3Observer> observer(
       new Firefox3Observer(import_search_engines));
   Firefox3xImporterBrowserTest("firefox35_profile", observer.get(),
                                observer.get(), import_search_engines);
 }