Use std::unique_ptr for base::DictionaryValue and base::ListValue's internal store.

tools/json_schema_compiler/util.h

 // 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.
 
 #ifndef TOOLS_JSON_SCHEMA_COMPILER_UTIL_H_
 #define TOOLS_JSON_SCHEMA_COMPILER_UTIL_H_
 
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 83 matching lines @@
   *out = std::move(obj);
   return true;
 }
 
 // Populates |out| with |list|. Returns false if there is no list at the
 // specified key or if the list has anything other than |T|.
 template <class T>
 bool PopulateArrayFromList(const base::ListValue& list, std::vector<T>* out) {
   out->clear();
   T item;
-  for (const base::Value* value : list) {
+  for (const auto& value : list) {
     if (!PopulateItem(*value, &item))
       return false;
     // T might not be movable, but in that case it should be copyable, and this
     // will still work.
     out->push_back(std::move(item));
   }
 
   return true;
 }
 
 // Populates |out| with |list|. Returns false and sets |error| if there is no
 // list at the specified key or if the list has anything other than |T|.
 template <class T>
 bool PopulateArrayFromList(const base::ListValue& list,
                            std::vector<T>* out,
                            base::string16* error) {
   out->clear();
   T item;
-  for (const base::Value* value : list) {
+  for (const auto& value : list) {
     if (!PopulateItem(*value, &item, error))
       return false;
     out->push_back(std::move(item));
   }
 
   return true;
 }
 
 // Creates a new vector containing |list| at |out|. Returns
 // true on success or if there is nothing at the specified key. Returns false
@@ skipping 77 matching lines @@
     return CreateValueFromArray(*from);
   return nullptr;
 }
 
 std::string ValueTypeToString(base::Value::Type type);
 
 }  // namespace util
 }  // namespace json_schema_compiler
 
 #endif  // TOOLS_JSON_SCHEMA_COMPILER_UTIL_H_