Update legacy Tuple-using code.

chrome/browser/translate/translate_manager_render_view_host_unittest.cc

 // Copyright 2014 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 <algorithm>
 #include <set>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 117 matching lines @@
     SimulateOnPageTranslated(
         0, source_lang, target_lang, translate::TranslateErrors::NONE);
   }
 
   bool GetTranslateMessage(std::string* original_lang,
                            std::string* target_lang) {
     const IPC::Message* message = process()->sink().GetFirstMessageMatching(
         ChromeViewMsg_TranslatePage::ID);
     if (!message)
       return false;
-    Tuple4<int, std::string, std::string, std::string> translate_param;
+    Tuple<int, std::string, std::string, std::string> translate_param;
     ChromeViewMsg_TranslatePage::Read(message, &translate_param);
-    // Ignore translate_param.a which is the page seq no.
-    // Ignore translate_param.b which is the script injected in the page.
+    // Ignore get<0>(translate_param) which is the page seq no.
+    // Ignore get<1>(translate_param) which is the script injected in the page.
     if (original_lang)
-      *original_lang = translate_param.c;
+      *original_lang = get<2>(translate_param);
     if (target_lang)
-      *target_lang = translate_param.d;
+      *target_lang = get<3>(translate_param);
     return true;
   }
 
   InfoBarService* infobar_service() {
     return InfoBarService::FromWebContents(web_contents());
   }
 
   // Returns the translate infobar if there is 1 infobar and it is a translate
   // infobar.
   translate::TranslateInfoBarDelegate* GetTranslateInfoBar() {
@@ skipping 1513 matching lines @@
   menu->ExecuteCommand(IDC_CONTENT_CONTEXT_TRANSLATE, 0);
 
   // Check the bubble exists instead of the infobar.
   translate::TranslateInfoBarDelegate* infobar = GetTranslateInfoBar();
   ASSERT_TRUE(infobar == NULL);
   TranslateBubbleModel* bubble = factory->model();
   ASSERT_TRUE(bubble != NULL);
   EXPECT_EQ(TranslateBubbleModel::VIEW_STATE_TRANSLATING,
             bubble->GetViewState());
 }