Track USB device configuration state in Blink.

content/renderer/usb/web_usb_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 CONTENT_RENDERER_USB_WEB_USB_DEVICE_IMPL_H_
 #define CONTENT_RENDERER_USB_WEB_USB_DEVICE_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 17 matching lines @@
  public:
   WebUSBDeviceImpl(device::usb::DevicePtr device,
                    const blink::WebUSBDeviceInfo& device_info);
   ~WebUSBDeviceImpl() override;
 
  private:
   // blink::WebUSBDevice implementation:
   const blink::WebUSBDeviceInfo& info() const override;
   void open(blink::WebUSBDeviceOpenCallbacks* callbacks) override;
   void close(blink::WebUSBDeviceCloseCallbacks* callbacks) override;
-  void getConfiguration(
-      blink::WebUSBDeviceGetConfigurationCallbacks* callbacks) override;
   void setConfiguration(
       uint8_t configuration_value,
       blink::WebUSBDeviceSetConfigurationCallbacks* callbacks) override;
   void claimInterface(
       uint8_t interface_number,
       blink::WebUSBDeviceClaimInterfaceCallbacks* callbacks) override;
   void releaseInterface(
       uint8_t interface_number,
       blink::WebUSBDeviceReleaseInterfaceCallbacks* callbacks) override;
   void setInterface(uint8_t interface_number,
@@ skipping 28 matching lines @@
   blink::WebUSBDeviceInfo device_info_;
 
   base::WeakPtrFactory<WebUSBDeviceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUSBDeviceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_USB_WEB_USB_DEVICE_IMPL_H_