Connect WebUSB client interface to the devices app

content/renderer/usb/web_usb_client_impl.h

Index: content/renderer/usb/web_usb_client_impl.h
diff --git a/content/renderer/usb/web_usb_client_impl.h b/content/renderer/usb/web_usb_client_impl.h
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+// 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_CLIENT_IMPL_H_
+#define CONTENT_RENDERER_USB_WEB_USB_CLIENT_IMPL_H_
+
+#include "base/id_map.h"
+#include "base/macros.h"
+#include "device/devices_app/usb/public/interfaces/device_manager.mojom.h"
+#include "mojo/application/public/interfaces/service_provider.mojom.h"
+#include "third_party/WebKit/public/platform/modules/webusb/WebUSBClient.h"
+
+namespace content {
+
+class WebUSBClientImpl : public blink::WebUSBClient {
+ public:
+  explicit WebUSBClientImpl(mojo::ServiceProviderPtr device_services);
+  ~WebUSBClientImpl() override;
+
+ private:
+  // blink::WebUSBClient implementation:
+  void getDevices(blink::WebUSBClientGetDevicesCallbacks* callbacks) override;
+  void requestDevice(
+      const blink::WebUSBDeviceRequestOptions& options,
+      blink::WebUSBClientRequestDeviceCallbacks* callbacks) override;
+
+  mojo::ServiceProviderPtr device_services_;
+  device::usb::DeviceManagerPtr device_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebUSBClientImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_USB_WEB_USB_CLIENT_IMPL_H_