Spellchecker should recheck after changing language.

chrome/browser/tab_contents/spellchecker_submenu_observer_hunspell.cc

 // Copyright (c) 2011 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 "chrome/browser/tab_contents/spellchecker_submenu_observer.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 150 matching lines @@
     case IDC_CONTENT_CONTEXT_SPELLING_TOGGLE:
       return true;
   }
 
   return false;
 }
 
 void SpellCheckerSubMenuObserver::ExecuteCommand(int command_id) {
   DCHECK(IsCommandIdSupported(command_id));
 
+  RenderViewHost* rvh = proxy_->GetRenderViewHost();
+
   // Check to see if one of the spell check language ids have been clicked.
   if (command_id >= IDC_SPELLCHECK_LANGUAGES_FIRST &&
       command_id < IDC_SPELLCHECK_LANGUAGES_LAST) {
     Profile* profile = proxy_->GetProfile();
     const size_t language = command_id - IDC_SPELLCHECK_LANGUAGES_FIRST;
     if (profile && language < languages_.size()) {
       StringPrefMember dictionary_language;
       dictionary_language.Init(prefs::kSpellCheckDictionary,
                                profile->GetPrefs(),
                                NULL);
       dictionary_language.SetValue(languages_[language]);
+      rvh->RequestTextChecking();
     }
     return;
   }
 
-  RenderViewHost* rvh = proxy_->GetRenderViewHost();
   switch (command_id) {
     case IDC_CHECK_SPELLING_OF_THIS_FIELD:
       rvh->Send(new SpellCheckMsg_ToggleSpellCheck(rvh->routing_id()));
       break;
 
 #if defined(OS_WIN)
     case IDC_CONTENT_CONTEXT_SPELLING_TOGGLE:
       // When a user chooses the "Ask Google for spelling suggestions" item, we
       // show a bubble to confirm it. On the other hand, when a user chooses the
       // "Stop asking Google for spelling suggestions" item, we directly update
       // the profile and stop integrating the spelling service immediately.
       if (!integrate_spelling_service_) {
         gfx::Rect rect = rvh->view()->GetViewBounds();
         ConfirmBubbleModel::Show(rvh->view()->GetNativeView(),
                                  gfx::Point(rect.CenterPoint().x(), rect.y()),
                                  new SpellingBubbleModel(proxy_->GetProfile()));
       } else {
         Profile* profile = proxy_->GetProfile();
         if (profile)
           profile->GetPrefs()->SetBoolean(prefs::kSpellCheckUseSpellingService,
                                           false);
       }
       break;
 #endif
   }
 }