Implement bluetooth chooser for Chrome Apps on Mac

chrome/browser/ui/bluetooth/chrome_extension_bluetooth_chooser.h

+// Copyright 2016 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_BLUETOOTH_CHROME_EXTENSION_BLUETOOTH_CHOOSER_H_
+#define CHROME_BROWSER_UI_BLUETOOTH_CHROME_EXTENSION_BLUETOOTH_CHOOSER_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "content/public/browser/bluetooth_chooser.h"
+
+class BluetoothChooserController;
+class ChromeExtensionChooserDialog;
+
+namespace content {
+class RenderFrameHost;
+}
+
+// Represents a Bluetooth chooser to ask the user to select a Bluetooth
+// device from a list of options. This implementation is for extensions.
+class ChromeExtensionBluetoothChooser : public content::BluetoothChooser {

[Reilly Grant (use Gerrit), 2016/06/01 17:59:23]

This seems to be a duplicate of BluetoothChooserDesktop.

[juncai, 2016/06/01 21:15:47]

Talked offline. The ChromeExtensionBluetoothChooser and BluetoothChooserDesktop
have different ownership model of the BluetoothChooserController object. So it
seems better to have two separate classes for Chrome and extension.

+ public:
+  ChromeExtensionBluetoothChooser(
+      content::RenderFrameHost* frame,
+      const content::BluetoothChooser::EventHandler& event_handler);
+  ~ChromeExtensionBluetoothChooser() override;
+
+  // content::BluetoothChooser:
+  void SetAdapterPresence(AdapterPresence presence) override;
+  void ShowDiscoveryState(DiscoveryState state) override;
+  void AddDevice(const std::string& device_id,
+                 const base::string16& device_name) override;
+  void RemoveDevice(const std::string& device_id) override;
+
+ private:
+  std::unique_ptr<BluetoothChooserController> bluetooth_chooser_controller_;
+  std::unique_ptr<ChromeExtensionChooserDialog> chooser_dialog_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeExtensionBluetoothChooser);
+};
+
+#endif  // CHROME_BROWSER_UI_BLUETOOTH_CHROME_EXTENSION_BLUETOOTH_CHOOSER_H_