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

chrome/browser/prerender/prefetch_browsertest.cc

Index: chrome/browser/prerender/prefetch_browsertest.cc
===================================================================
--- chrome/browser/prerender/prefetch_browsertest.cc	(revision 147602)
+++ chrome/browser/prerender/prefetch_browsertest.cc	(working copy)
@@ -9,6 +9,7 @@
 #include "chrome/common/chrome_switches.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
+#include "content/public/test/browser_test_utils.h"
 
 namespace {
 
@@ -52,7 +53,7 @@
   GURL url = test_server()->GetURL(kPrefetchPage);
 
   const string16 expected_title = ASCIIToUTF16("link onload");
-  ui_test_utils::TitleWatcher title_watcher(
+  content::TitleWatcher title_watcher(
       chrome::GetActiveWebContents(browser()),
       expected_title);
   ui_test_utils::NavigateToURL(browser(), url);
@@ -65,7 +66,7 @@
   GURL url = test_server()->GetURL(kPrefetchPage);
 
   const string16 expected_title = ASCIIToUTF16("link onerror");
-  ui_test_utils::TitleWatcher title_watcher(
+  content::TitleWatcher title_watcher(
       chrome::GetActiveWebContents(browser()),
       expected_title);
   ui_test_utils::NavigateToURL(browser(), url);