Relanding the language detection.

chrome/test/ui_test_utils.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_TEST_UI_TEST_UTILS_H_
 #define CHROME_TEST_UI_TEST_UTILS_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 97 matching lines @@
 // Causes the specified tab to crash. Blocks until it is crashed.
 void CrashTab(TabContents* tab);
 
 // Waits for the focus to change in the specified RenderViewHost.
 void WaitForFocusChange(RenderViewHost* rvh);
 
 // Waits for the renderer to return focus to the browser (happens through tab
 // traversal).
 void WaitForFocusInBrowser(Browser* browser);
 
+// Waits for the language of the page to have been detected and returns it.
+// This should be called right after a navigation notification was received.
+std::string WaitForLanguageDetection(TabContents* tab_contents);
+
 // Performs a find in the page of the specified tab. Returns the number of
 // matches found.  |ordinal| is an optional parameter which is set to the index
 // of the current match.
 int FindInPage(TabContents* tab,
                const string16& search_string,
                bool forward,
                bool case_sensitive,
                int* ordinal);
 
 // Returns true if the View is focused.
@@ skipping 37 matching lines @@
   MessageLoop* loop_;
   bool owned_;
   bool quit_loop_invoked_;
 
   DISALLOW_COPY_AND_ASSIGN(TimedMessageLoopRunner);
 };
 
 }  // namespace ui_test_utils
 
 #endif  // CHROME_TEST_UI_TEST_UTILS_H_