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

content/browser/browsing_data/clear_site_data_throttle.cc

 // Copyright 2016 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 "content/browser/browsing_data/clear_site_data_throttle.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/memory/ptr_util.h"
@@ skipping 188 matching lines @@
     return false;
   }
 
   DCHECK(types);
 
   *clear_cookies = false;
   *clear_storage = false;
   *clear_cache = false;
 
   std::vector<std::string> type_names;
-  for (const base::Value& value : *types) {
+  for (const std::unique_ptr<base::Value>& value : *types) {
     std::string type;
-    value.GetAsString(&type);
+    value->GetAsString(&type);
 
     bool* datatype = nullptr;
 
     if (type == "cookies") {
       datatype = clear_cookies;
     } else if (type == "storage") {
       datatype = clear_storage;
     } else if (type == "cache") {
       datatype = clear_cache;
     } else {
       std::string serialized_type;
       JSONStringValueSerializer serializer(&serialized_type);
-      serializer.Serialize(value);
+      serializer.Serialize(*value);
       ConsoleLog(
           messages, current_url_,
           base::StringPrintf("Invalid type: %s.", serialized_type.c_str()),
           CONSOLE_MESSAGE_LEVEL_ERROR);
       continue;
     }
 
     // Each data type should only be processed once.
     DCHECK(datatype);
     if (*datatype)
@@ skipping 38 matching lines @@
 
   UMA_HISTOGRAM_CUSTOM_TIMES("Navigation.ClearSiteData.Duration",
                              base::TimeTicks::Now() - clearing_started_,
                              base::TimeDelta::FromMilliseconds(1),
                              base::TimeDelta::FromSeconds(1), 50);
 
   navigation_handle()->Resume();
 }
 
 }  // namespace content