Some linked_ptr -> unique_ptr conversion in extensions/browser.

chrome/browser/extensions/api/input_ime/input_ime_api.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/extensions/api/input_ime/input_ime_api.h"
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/common/extensions/api/input_ime.h"
 #include "content/public/browser/notification_registrar.h"
@@ skipping 156 matching lines @@
     input_ime::OnSurroundingTextChanged::kEventName, std::move(args));
 }
 
 bool ImeObserver::ShouldForwardKeyEvent() const {
   // Only forward key events to extension if there are non-lazy listeners
   // for onKeyEvent. Because if something wrong with the lazy background
   // page which doesn't register listener for onKeyEvent, it will not handle
   // the key events, and therefore, all key events will be eaten.
   // This is for error-tolerance, and it means that onKeyEvent will never wake
   // up lazy background page.
-  const extensions::EventListenerMap::ListenerList& listener_list =
+  const extensions::EventListenerMap::ListenerList& listeners =
       extensions::EventRouter::Get(profile_)
           ->listeners()
           .GetEventListenersByName(input_ime::OnKeyEvent::kEventName);
-  for (extensions::EventListenerMap::ListenerList::const_iterator it =
-           listener_list.begin();
-       it != listener_list.end(); ++it) {
-    if ((*it)->extension_id() == extension_id_ && !(*it)->IsLazy())
+  for (const std::unique_ptr<extensions::EventListener>& listener : listeners) {
+    if (listener->extension_id() == extension_id_ && !listener->IsLazy())
       return true;
   }
   return false;
 }
 
 bool ImeObserver::HasListener(const std::string& event_name) const {
   return extensions::EventRouter::Get(profile_)->HasEventListener(event_name);
 }
 
 std::string ImeObserver::ConvertInputContextType(
@@ skipping 217 matching lines @@
 InputImeEventRouter* GetInputImeEventRouter(Profile* profile) {
   if (!profile)
     return nullptr;
   if (profile->HasOffTheRecordProfile())
     profile = profile->GetOffTheRecordProfile();
   return extensions::InputImeEventRouterFactory::GetInstance()->GetRouter(
       profile);
 }
 
 }  // namespace extensions