Move TitleWatcher from ui_test_utils.h to browser_test_utils.h so it can be reused by content_brows…

chrome/browser/unload_browsertest.cc

Index: chrome/browser/unload_browsertest.cc
===================================================================
--- chrome/browser/unload_browsertest.cc	(revision 147602)
+++ chrome/browser/unload_browsertest.cc	(working copy)
@@ -24,6 +24,7 @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/test/browser_test_utils.h"
 #include "content/test/net/url_request_mock_http_job.h"
 #include "net/url_request/url_request_test_util.h"
 
@@ -275,7 +276,7 @@
   // won't put up the beforeunload dialog because it's waiting for an ack from
   // the renderer.
   string16 expected_title = ASCIIToUTF16("cancelled");
-  ui_test_utils::TitleWatcher title_watcher(
+  content::TitleWatcher title_watcher(
       chrome::GetActiveWebContents(browser()), expected_title);
   ClickModalDialogButton(false);
   ASSERT_EQ(expected_title, title_watcher.WaitAndGetTitle());