Use proper pair type in range-based for map iterations.

extensions/browser/api/hid/hid_device_manager.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/browser/api/hid/hid_device_manager.h"
 
 #include <limits>
 #include <vector>
 
 #include "base/lazy_instance.h"
@@ skipping 218 matching lines @@
   initialized_ = true;
 }
 
 scoped_ptr<base::ListValue> HidDeviceManager::CreateApiDeviceList(
     const Extension* extension,
     const std::vector<HidDeviceFilter>& filters) {
   HidService* hid_service = device::DeviceClient::Get()->GetHidService();
   DCHECK(hid_service);
 
   scoped_ptr<base::ListValue> api_devices(new base::ListValue());
-  for (const std::pair<int, HidDeviceId>& map_entry : device_ids_) {
+  for (const ResourceIdToDeviceIdMap::value_type& map_entry : device_ids_) {
     int resource_id = map_entry.first;
     const HidDeviceId& device_id = map_entry.second;
 
     scoped_refptr<HidDeviceInfo> device_info =
         hid_service->GetDeviceInfo(device_id);
     if (!device_info) {
       continue;
     }
 
     if (!filters.empty() &&
@@ skipping 38 matching lines @@
 void HidDeviceManager::DispatchEvent(const std::string& event_name,
                                      scoped_ptr<base::ListValue> event_args,
                                      scoped_refptr<HidDeviceInfo> device_info) {
   scoped_ptr<Event> event(new Event(event_name, event_args.Pass()));
   event->will_dispatch_callback =
       base::Bind(&WillDispatchDeviceEvent, device_info);
   event_router_->BroadcastEvent(event.Pass());
 }
 
 }  // namespace extensions