bluetooth: Handle two consecutives requestDevice calls.

content/browser/bluetooth/bluetooth_device_chooser_controller.cc

Index: content/browser/bluetooth/bluetooth_device_chooser_controller.cc
diff --git a/content/browser/bluetooth/bluetooth_device_chooser_controller.cc b/content/browser/bluetooth/bluetooth_device_chooser_controller.cc
index 16a3630a279531bd04e2738d10730221c5675934..15319c84ca00e33f9f47b4f5752f5ded03be3189 100644
--- a/content/browser/bluetooth/bluetooth_device_chooser_controller.cc
+++ b/content/browser/bluetooth/bluetooth_device_chooser_controller.cc
@@ -218,7 +218,11 @@ BluetoothDeviceChooserController::BluetoothDeviceChooserController(
   CHECK(adapter_);
 }
 
-BluetoothDeviceChooserController::~BluetoothDeviceChooserController() {}
+BluetoothDeviceChooserController::~BluetoothDeviceChooserController() {
+  if (chooser_) {
+    error_callback_.Run(blink::mojom::WebBluetoothError::CHOOSER_CANCELLED);

[Jeffrey Yasskin, 2016/06/10 00:49:22]

DCHECK(!error_callback_.is_null())? It'll crash in .Run() anyway, but it's nice
to see that we think there's an invariant that chooser_ implies a non-null
callback.

[ortuno, 2016/06/10 18:10:07]

Done.

+  }
+}
 
 void BluetoothDeviceChooserController::GetDevice(
     blink::mojom::WebBluetoothRequestDeviceOptionsPtr options,