[Extensions] Make Event::restrict_to_browser_context const.

chrome/browser/chromeos/extensions/dictionary_event_router.cc

 // Copyright (c) 2015 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/chromeos/extensions/dictionary_event_router.h"
 
 #include <string>
 #include <utility>
 
 #include "base/json/json_writer.h"
+#include "base/memory/ptr_util.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/extensions/input_method_api.h"
 #include "chrome/browser/spellchecker/spellcheck_factory.h"
 #include "chrome/common/extensions/api/input_method_private.h"
 #include "content/public/browser/browser_context.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_system.h"
 
 namespace OnDictionaryChanged =
     extensions::api::input_method_private::OnDictionaryChanged;
@@ skipping 21 matching lines @@
 
 void ExtensionDictionaryEventRouter::DispatchLoadedEventIfLoaded() {
   if (!loaded_)
     return;
 
   extensions::EventRouter* router = extensions::EventRouter::Get(context_);
   if (!router->HasEventListener(OnDictionaryLoaded::kEventName)) {
     return;
   }
 
-  std::unique_ptr<base::ListValue> args(new base::ListValue());
   // The router will only send the event to extensions that are listening.
-  std::unique_ptr<extensions::Event> event(new extensions::Event(
+  auto event = base::MakeUnique<extensions::Event>(
       extensions::events::INPUT_METHOD_PRIVATE_ON_DICTIONARY_LOADED,
-      OnDictionaryLoaded::kEventName, std::move(args)));
-  event->restrict_to_browser_context = context_;
+      OnDictionaryLoaded::kEventName, base::MakeUnique<base::ListValue>(),
+      context_);
   router->BroadcastEvent(std::move(event));
 }
 
 void ExtensionDictionaryEventRouter::OnCustomDictionaryLoaded() {
   loaded_ = true;
   DispatchLoadedEventIfLoaded();
 }
 
 void ExtensionDictionaryEventRouter::OnCustomDictionaryChanged(
     const SpellcheckCustomDictionary::Change& dictionary_change) {
   extensions::EventRouter* router = extensions::EventRouter::Get(context_);
 
   if (!router->HasEventListener(OnDictionaryChanged::kEventName)) {
     return;
   }
 
   std::unique_ptr<base::ListValue> added_words(new base::ListValue());
   for (const std::string& word : dictionary_change.to_add())
     added_words->AppendString(word);
 
   std::unique_ptr<base::ListValue> removed_words(new base::ListValue());
   for (const std::string& word : dictionary_change.to_remove())
     removed_words->AppendString(word);
 
   std::unique_ptr<base::ListValue> args(new base::ListValue());
   args->Append(std::move(added_words));
   args->Append(std::move(removed_words));
 
   // The router will only send the event to extensions that are listening.
-  std::unique_ptr<extensions::Event> event(new extensions::Event(
+  auto event = base::MakeUnique<extensions::Event>(
       extensions::events::INPUT_METHOD_PRIVATE_ON_DICTIONARY_CHANGED,
-      OnDictionaryChanged::kEventName, std::move(args)));
-  event->restrict_to_browser_context = context_;
+      OnDictionaryChanged::kEventName, std::move(args), context_);
   router->BroadcastEvent(std::move(event));
 }
 
 }  // namespace chromeos