Add chrome side webusb permission UI code

chrome/browser/usb/web_usb_permission_bubble_request.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 CHROME_BROWSER_USB_WEB_USB_PERMISSION_BUBBLE_REQUEST_H_
+#define CHROME_BROWSER_USB_WEB_USB_PERMISSION_BUBBLE_REQUEST_H_
+
+#include <string>
+#include <vector>
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "components/webusb/public/interfaces/webusb_permission_bubble.mojom.h"
+
+namespace device {
+class UsbDevice;
+}
+
+// A permission bubble request that presents the user with a chooser to allow
+// a certain item access or deny all items access.
+class WebUsbPermissionBubbleRequest {
+ public:
+  WebUsbPermissionBubbleRequest(
+      const std::vector<scoped_refptr<device::UsbDevice>>& devices,
+      const webusb::WebUsbPermissionBubble::GetPermissionCallback& callback);
+  ~WebUsbPermissionBubbleRequest();
+
+  void Connect(int index);
+  void Cancel();
+
+  const std::vector<std::string>& device_names() const;
+
+ private:
+  std::vector<std::string> device_names_;
+  std::vector<scoped_refptr<device::UsbDevice>> devices_;
+  int num_devices_;
+  webusb::WebUsbPermissionBubble::GetPermissionCallback callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebUsbPermissionBubbleRequest);
+};
+
+#endif  // CHROME_BROWSER_USB_WEB_USB_PERMISSION_BUBBLE_REQUEST_H_