Change ChooserController ownership model

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"
@@ skipping 16 matching lines @@
   ~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_;
+  // Weak. ChooserContentView[Cocoa] owns it.
+  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_