extensions/browser/api/usb/usb_device_resource.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "extensions/browser/api/usb/usb_device_resource.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/bind.h"
  11 #include "base/bind_helpers.h"
  12 #include "base/lazy_instance.h"
  13 #include "base/synchronization/lock.h"
  14 #include "content/public/browser/browser_thread.h"
  15 #include "device/usb/usb_device_handle.h"
  16 #include "extensions/browser/api/api_resource.h"
  17 #include "extensions/common/api/usb.h"
  18
  19 using content::BrowserThread;
  20 using device::UsbDeviceHandle;
  21
  22 namespace extensions {
  23
  24 static base::LazyInstance<
  25     BrowserContextKeyedAPIFactory<ApiResourceManager<UsbDeviceResource> > >
  26     g_factory = LAZY_INSTANCE_INITIALIZER;
  27
  28 // static
  29 template <>
  30 BrowserContextKeyedAPIFactory<ApiResourceManager<UsbDeviceResource> >*
  31 ApiResourceManager<UsbDeviceResource>::GetFactoryInstance() {
  32   return g_factory.Pointer();
  33 }
  34
  35 UsbDeviceResource::UsbDeviceResource(const std::string& owner_extension_id,
  36                                      scoped_refptr<UsbDeviceHandle> device)
  37     : ApiResource(owner_extension_id), device_(device) {
  38 }
  39
  40 UsbDeviceResource::~UsbDeviceResource() {
  41   device_->Close();
  42 }
  43
  44 bool UsbDeviceResource::IsPersistent() const {
  45   return false;
  46 }
  47
  48 }  // namespace extensions