Move UsbService to its own component.

components/usb_service/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 "components/usb_service/usb_service.h"
 
 #include <set>
 #include <vector>
 
 #include "base/lazy_instance.h"
 #include "base/stl_util.h"
-#include "chrome/browser/usb/usb_context.h"
-#include "chrome/browser/usb/usb_device.h"
+#include "components/usb_service/usb_context.h"
+#include "components/usb_service/usb_device.h"
 #include "content/public/browser/browser_thread.h"
 #include "third_party/libusb/src/libusb/libusb.h"
 
+namespace usb_service {
+
 namespace {
 
 base::LazyInstance<scoped_ptr<UsbService> >::Leaky g_usb_service_instance =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 // static
 UsbService* UsbService::GetInstance() {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
@@ skipping 86 matching lines @@
 
   // Remove disconnected devices from devices_.
   for (size_t i = 0; i < disconnected_devices.size(); ++i) {
     // UsbDevice will be destroyed after this. The corresponding
     // PlatformUsbDevice will be unref'ed during this process.
     devices_.erase(disconnected_devices[i]);
   }
 
   libusb_free_device_list(platform_devices, true);
 }
+
+}  // namespace usb_service