Revert of Change base::Value::ListStorage to std::vector<base::Value>

chrome/browser/spellchecker/spellcheck_service_browsertest.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/spellchecker/spellcheck_service.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string>
 #include <tuple>
@@ skipping 115 matching lines @@
                           base::SPLIT_WANT_NONEMPTY));
     prefs_->Set(spellcheck::prefs::kSpellCheckDictionaries, dictionaries_value);
   }
 
   std::string GetMultilingualDictionaries() {
     const base::ListValue* list_value =
         prefs_->GetList(spellcheck::prefs::kSpellCheckDictionaries);
     std::vector<base::StringPiece> dictionaries;
     for (const auto& item_value : *list_value) {
       base::StringPiece dictionary;
-      EXPECT_TRUE(item_value.GetAsString(&dictionary));
+      EXPECT_TRUE(item_value->GetAsString(&dictionary));
       dictionaries.push_back(dictionary);
     }
     return base::JoinString(dictionaries, ",");
   }
 
   void SetAcceptLanguages(const std::string& accept_languages) {
     ScopedPreferenceChange scope(&renderer_->sink());
     prefs_->SetString(prefs::kAcceptLanguages, accept_languages);
   }
 
@@ skipping 241 matching lines @@
   std::string pref;
   ASSERT_TRUE(GetPrefs()
                   ->GetList(spellcheck::prefs::kSpellCheckDictionaries)
                   ->GetString(0, &pref));
   EXPECT_EQ("en-US", pref);
   ASSERT_TRUE(GetPrefs()
                   ->GetList(spellcheck::prefs::kSpellCheckDictionaries)
                   ->GetString(1, &pref));
   EXPECT_EQ("fr", pref);
 }