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

chrome/browser/browsing_data/browsing_data_local_storage_helper_browsertest.cc

 // Copyright (c) 2012 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 <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
@@ skipping 100 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(BrowsingDataLocalStorageHelperTest, CallbackCompletes) {
   scoped_refptr<BrowsingDataLocalStorageHelper> local_storage_helper(
       new BrowsingDataLocalStorageHelper(browser()->profile()));
   CreateLocalStorageFilesForTest();
   StopTestOnCallback stop_test_on_callback(local_storage_helper);
   local_storage_helper->StartFetching(
       base::Bind(&StopTestOnCallback::Callback,
                  base::Unretained(&stop_test_on_callback)));
   // Blocks until StopTestOnCallback::Callback is notified.
-  ui_test_utils::RunMessageLoop();
+  content::RunMessageLoop();
 }
 
 IN_PROC_BROWSER_TEST_F(BrowsingDataLocalStorageHelperTest, DeleteSingleFile) {
   scoped_refptr<BrowsingDataLocalStorageHelper> local_storage_helper(
       new BrowsingDataLocalStorageHelper(browser()->profile()));
   CreateLocalStorageFilesForTest();
   local_storage_helper->DeleteOrigin(GURL(kOriginOfTestFile0));
   BrowserThread::GetBlockingPool()->FlushForTesting();
 
   // Ensure the file has been deleted.
@@ skipping 50 matching lines @@
       base::Bind(&TestCompletionCallback::callback,
                  base::Unretained(&callback)));
 
   std::list<BrowsingDataLocalStorageHelper::LocalStorageInfo> result =
       callback.result();
 
   ASSERT_EQ(1u, result.size());
   EXPECT_EQ(origin, result.begin()->origin_url);
 }
 }  // namespace