Add chrome side webusb permission UI code

chrome/browser/ui/views/website_settings/chooser_bubble_delegate.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_UI_VIEWS_WEBSITE_SETTINGS_CHOOSER_BUBBLE_DELEGATE_H_
+#define CHROME_BROWSER_UI_VIEWS_WEBSITE_SETTINGS_CHOOSER_BUBBLE_DELEGATE_H_
+
+#include "components/bubble/bubble_delegate.h"
+
+class Browser;
+class WebUsbPermissionBubbleRequest;
+
+// ChooserBubbleDelegate creates a bubble ui for chooser permission
+class ChooserBubbleDelegate : public BubbleDelegate {
+ public:
+  ChooserBubbleDelegate(Browser* browser,
+                        scoped_ptr<WebUsbPermissionBubbleRequest> request);
+  ~ChooserBubbleDelegate() override;
+
+  // BubbleDelegate:
+  scoped_ptr<BubbleUi> BuildBubbleUi() override;
+  std::string GetName() const override;
+
+ private:
+  Browser* browser_;
+  scoped_ptr<WebUsbPermissionBubbleRequest> request_;

[Reilly Grant (use Gerrit), 2015/10/20 22:17:07]

Instead of holding the request the delegate should be constructed over the
parameters necessary to build the UI or it may be best to extend
ChooserBubbleDelegate in the USB-specific code.

[juncai, 2015/10/23 03:36:42]

Done.

+
+  DISALLOW_COPY_AND_ASSIGN(ChooserBubbleDelegate);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_WEBSITE_SETTINGS_CHOOSER_BUBBLE_DELEGATE_H_