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

extensions/renderer/dispatcher.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 "extensions/renderer/dispatcher.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <utility>
@@ skipping 154 matching lines @@
                       const std::string& method_name,
                       const base::ListValue* args,
                       ScriptContext* context) {
   v8::HandleScope handle_scope(context->isolate());
   v8::Context::Scope context_scope(context->v8_context());
 
   std::unique_ptr<content::V8ValueConverter> converter(
       content::V8ValueConverter::create());
 
   std::vector<v8::Local<v8::Value>> arguments;
-  for (base::ListValue::const_iterator it = args->begin(); it != args->end();
-       ++it) {
-    arguments.push_back(converter->ToV8Value(*it, context->v8_context()));
+  for (const auto& arg : *args) {
+    arguments.push_back(converter->ToV8Value(arg.get(), context->v8_context()));
   }
 
   context->module_system()->CallModuleMethod(
       module_name, method_name, &arguments);
 }
 
 // This handles the "chrome." root API object in script contexts.
 class ChromeNativeHandler : public ObjectBackedNativeHandler {
  public:
   explicit ChromeNativeHandler(ScriptContext* context)
@@ skipping 1414 matching lines @@
   // The "guestViewDeny" module must always be loaded last. It registers
   // error-providing custom elements for the GuestView types that are not
   // available, and thus all of those types must have been checked and loaded
   // (or not loaded) beforehand.
   if (context_type == Feature::BLESSED_EXTENSION_CONTEXT) {
     module_system->Require("guestViewDeny");
   }
 }
 
 }  // namespace extensions