Move chrome.usb to //extensions

chrome/browser/extensions/api/usb/usb_device_resource.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/usb/usb_device_resource.h"
-
-#include <string>
-#include <vector>
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/synchronization/lock.h"
-#include "chrome/common/extensions/api/usb.h"
-#include "components/usb_service/usb_device_handle.h"
-#include "content/public/browser/browser_thread.h"
-#include "extensions/browser/api/api_resource.h"
-
-using content::BrowserThread;
-using usb_service::UsbDeviceHandle;
-
-namespace extensions {
-
-static base::LazyInstance<
-    BrowserContextKeyedAPIFactory<ApiResourceManager<UsbDeviceResource> > >
-    g_factory = LAZY_INSTANCE_INITIALIZER;
-
-// static
-template <>
-BrowserContextKeyedAPIFactory<ApiResourceManager<UsbDeviceResource> >*
-ApiResourceManager<UsbDeviceResource>::GetFactoryInstance() {
-  return g_factory.Pointer();
-}
-
-UsbDeviceResource::UsbDeviceResource(const std::string& owner_extension_id,
-                                     scoped_refptr<UsbDeviceHandle> device)
-    : ApiResource(owner_extension_id), device_(device) {}
-
-UsbDeviceResource::~UsbDeviceResource() {
-  BrowserThread::PostTask(BrowserThread::FILE,
-                          FROM_HERE,
-                          base::Bind(&UsbDeviceHandle::Close, device_));
-}
-
-}  // namespace extensions