Update chrome/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

chrome/browser/usb/usb_service.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/usb/usb_service.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 182 matching lines @@
   if (!ContainsKey(devices_, device)) {
     libusb_device_handle* handle = NULL;
     if (libusb_open(device, &handle)) {
       LOG(WARNING) << "Could not open device.";
       return NULL;
     }
 
     UsbDevice* wrapper = new UsbDevice(this, handle);
     devices_[device] = wrapper;
   }
-  return devices_[device];
+  return devices_[device].get();
 }