Change ChooserController ownership model

chrome/browser/ui/bluetooth/chrome_extension_bluetooth_chooser.cc

Index: chrome/browser/ui/bluetooth/chrome_extension_bluetooth_chooser.cc
diff --git a/chrome/browser/ui/bluetooth/chrome_extension_bluetooth_chooser.cc b/chrome/browser/ui/bluetooth/chrome_extension_bluetooth_chooser.cc
index bb653096282127a0834a23019250b6b20dbb1b07..e27f1ded72a06388a439acc8d4d601b1fbf199a6 100644
--- a/chrome/browser/ui/bluetooth/chrome_extension_bluetooth_chooser.cc
+++ b/chrome/browser/ui/bluetooth/chrome_extension_bluetooth_chooser.cc
@@ -11,11 +11,12 @@
 ChromeExtensionBluetoothChooser::ChromeExtensionBluetoothChooser(
     content::RenderFrameHost* frame,
     const content::BluetoothChooser::EventHandler& event_handler) {
-  bluetooth_chooser_controller_.reset(
+  std::unique_ptr<BluetoothChooserController> bluetooth_chooser_controller(
       new BluetoothChooserController(frame, event_handler));
+  bluetooth_chooser_controller_ = bluetooth_chooser_controller.get();

[Reilly Grant (use Gerrit), 2016/06/22 00:01:32]

Please add a comment here explaining why storing this raw pointer is safe.

[juncai, 2016/06/22 01:17:45]

Done.

   chooser_dialog_.reset(new ChromeExtensionChooserDialog(
       content::WebContents::FromRenderFrameHost(frame)));
-  chooser_dialog_->ShowDialog(bluetooth_chooser_controller_.get());
+  chooser_dialog_->ShowDialog(std::move(bluetooth_chooser_controller));
 }
 
 ChromeExtensionBluetoothChooser::~ChromeExtensionBluetoothChooser() {}