Translate: enable against unknown languages with server side detection

chrome/browser/tab_contents/render_view_context_menu.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 "chrome/browser/tab_contents/render_view_context_menu.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 1180 matching lines @@
       if (!translate_tab_helper)
         return false;
       std::string original_lang =
           translate_tab_helper->language_state().original_language();
       std::string target_lang = g_browser_process->GetApplicationLocale();
       target_lang = TranslateManager::GetLanguageCode(target_lang);
       // Note that we intentionally enable the menu even if the original and
       // target languages are identical.  This is to give a way to user to
       // translate a page that might contains text fragments in a different
       // language.
-      return !!(params_.edit_flags & WebContextMenuData::CanTranslate) &&
+      return ((params_.edit_flags & WebContextMenuData::CanTranslate) != 0) &&
              !original_lang.empty() &&  // Did we receive the page language yet?
-             // Only allow translating languages we explitly support and the
-             // unknown language (in which case the page language is detected on
-             // the server side).
-             (original_lang == chrome::kUnknownLanguageCode ||
-                 TranslateManager::IsSupportedLanguage(original_lang)) &&
              !translate_tab_helper->language_state().IsPageTranslated() &&
              !source_web_contents_->GetInterstitialPage() &&
              // There are some application locales which can't be used as a
              // target language for translation.
              TranslateManager::IsSupportedLanguage(target_lang);
     }
 
     case IDC_CONTENT_CONTEXT_OPENLINKNEWTAB:
     case IDC_CONTENT_CONTEXT_OPENLINKNEWWINDOW:
       return params_.link_url.is_valid();
@@ skipping 825 matching lines @@
   source_web_contents_->GetRenderViewHost()->
       ExecuteMediaPlayerActionAtLocation(location, action);
 }
 
 void RenderViewContextMenu::PluginActionAt(
     const gfx::Point& location,
     const WebPluginAction& action) {
   source_web_contents_->GetRenderViewHost()->
       ExecutePluginActionAtLocation(location, action);
 }