Move ui_test_utils::RunMessageLoop to test_utils so that it can be reused by content_browsertests.

chrome/browser/importer/toolbar_importer_utils_browsertest.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 "base/bind.h"
 #include "base/message_loop.h"
 #include "chrome/browser/importer/toolbar_importer_utils.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
@@ skipping 15 matching lines @@
   bool did_run_;
 };
 
 IN_PROC_BROWSER_TEST_F(ToolbarImporterUtilsTest, NoCrash) {
   // Regression test for http://crbug.com/89752
   toolbar_importer_utils::IsGoogleGAIACookieInstalled(
       base::Bind(&ToolbarImporterUtilsTest::Callback,
                  base::Unretained(this)),
       browser()->profile());
   if (!did_run_) {
-    ui_test_utils::RunMessageLoop();
+    content::RunMessageLoop();
   }
   ASSERT_TRUE(did_run_);
 }
 
 }  // namespace