device: Cleanup class/struct forward declarations

device/usb/mojo/device_impl.h

 // Copyright 2015 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.
 
 #ifndef DEVICE_USB_MOJO_DEVICE_IMPL_H_
 #define DEVICE_USB_MOJO_DEVICE_IMPL_H_
 
 #include <stdint.h>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/scoped_observer.h"
 #include "device/usb/mojo/permission_provider.h"
 #include "device/usb/public/interfaces/device.mojom.h"
 #include "device/usb/usb_device.h"
 #include "device/usb/usb_device_handle.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 
-namespace net {
-class IOBuffer;
-}
-
 namespace device {
 namespace usb {
 
 class PermissionProvider;
 
 // Implementation of the public Device interface. Instances of this class are
 // constructed by DeviceManagerImpl and are strongly bound to their MessagePipe
 // lifetime.
 class DeviceImpl : public Device, public device::UsbDevice::Observer {
  public:
@@ skipping 76 matching lines @@
   mojo::Binding<Device> binding_;
   base::WeakPtrFactory<DeviceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceImpl);
 };
 
 }  // namespace usb
 }  // namespace device
 
 #endif  // DEVICE_USB_MOJO_DEVICE_IMPL_H_