add device type as an argument in OnDevicesChanged.

content/browser/gamepad/gamepad_provider.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 <cmath>
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 73 matching lines @@
 
   MessageLoop* polling_loop = polling_thread_->message_loop();
   polling_loop->PostTask(
       FROM_HERE,
       base::Bind(&GamepadProvider::SendPauseHint, Unretained(this), false));
   polling_loop->PostTask(
       FROM_HERE,
       base::Bind(&GamepadProvider::ScheduleDoPoll, Unretained(this)));
 }
 
-void GamepadProvider::OnDevicesChanged() {
+void GamepadProvider::OnDevicesChanged(base::SystemMonitor::DeviceType type) {
   base::AutoLock lock(devices_changed_lock_);
   devices_changed_ = true;
 }
 
 void GamepadProvider::DoInitializePollingThread(GamepadDataFetcher* fetcher) {
   DCHECK(MessageLoop::current() == polling_thread_->message_loop());
 
   if (data_fetcher_ != NULL) {
     // Already initialized.
     return;
@@ skipping 59 matching lines @@
   have_scheduled_do_poll_ = true;
 }
 
 GamepadHardwareBuffer* GamepadProvider::SharedMemoryAsHardwareBuffer() {
   void* mem = gamepad_shared_memory_.memory();
   CHECK(mem);
   return static_cast<GamepadHardwareBuffer*>(mem);
 }
 
 }  // namespace content