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

chrome/browser/history/history_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 <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/utf_string_conversions.h"
@@ skipping 49 matching lines @@
  public:
   explicit HistoryEnumerator(HistoryService* history) {
     EXPECT_TRUE(history);
     if (!history)
       return;
 
     BrowserThread::PostTask(
         BrowserThread::UI,
         FROM_HERE,
         base::Bind(&HistoryService::IterateURLs, history, this));
-    ui_test_utils::RunMessageLoop();
+    content::RunMessageLoop();
   }
 
   virtual void OnURL(const GURL& url) {
     urls_.push_back(url);
   }
 
   virtual void OnComplete(bool success) {
     BrowserThread::PostTask(
         BrowserThread::UI,
         FROM_HERE,
@@ skipping 41 matching lines @@
   }
 
   void WaitForHistoryBackendToRun() {
     CancelableRequestConsumerTSimple<int> request_consumer;
     scoped_refptr<HistoryDBTask> task(new WaitForHistoryTask());
     HistoryService* history = GetHistoryService();
     BrowserThread::PostTask(BrowserThread::UI,
                             FROM_HERE,
                             base::Bind(&HistoryService::ScheduleDBTask,
                                        history, task, &request_consumer));
-    ui_test_utils::RunMessageLoop();
+    content::RunMessageLoop();
   }
 
   void ExpectEmptyHistory() {
     std::vector<GURL> urls(GetHistoryContents());
     EXPECT_EQ(0U, urls.size());
   }
 
   void LoadAndWaitForURL(const GURL& url) {
     string16 expected_title(ASCIIToUTF16("OK"));
     content::TitleWatcher title_watcher(
@@ skipping 160 matching lines @@
   // Mainly, this is to ensure we send a synchronous message to the renderer
   // so that we're not susceptible (less susceptible?) to a race condition.
   // Should a race condition ever trigger, it won't result in flakiness.
   int num = ui_test_utils::FindInPage(
       chrome::GetActiveTabContents(browser()), ASCIIToUTF16("<img"), true,
       true, NULL);
   EXPECT_GT(num, 0);
   EXPECT_EQ(ASCIIToUTF16("History"),
             chrome::GetActiveWebContents(browser())->GetTitle());
 }