bluetooth: Move connect/disconnect to mojo

third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom

 // 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.
 
 module blink.mojom;
 
 // Errors that can occur during Web Bluetooth execution, which are transformed
 // to a DOMException in Source/modules/bluetooth/BluetoothError.cpp.
 //
 // These errors all produce constant message strings. If a particular message
@@ skipping 79 matching lines @@
 // https://crbug.com/508771
 
 // Web Bluetooth Interface that Blink can use to perform
 // Bluetooth GATT Operations on Bluetooth Devices.
 interface WebBluetoothService {
   // Sets the client for this WebBluetoothService. The service will notify the
   // client of device events e.g. when a Characteristic's value changes or when
   // a device disconnects.
   SetClient(associated WebBluetoothServiceClient client);
 
+  // Creates a GATT Connection to a Bluetooth Device with |device_id| if a
+  // connection to the device didn't exist already. If a GATT connection existed
+  // already then this function increases the ref count to keep that connection

[Jeffrey Yasskin, 2016/05/03 01:15:57]

If the connection already existed, this should also allow the current realm to
call functions that require a connection: https://crbug.com/608538

[ortuno, 2016/05/03 16:11:54]

Should I add a TODO for that issue here?

[Jeffrey Yasskin, 2016/05/03 16:31:32]

Oops, I meant to remove this comment: I think the disconnect enforcement has to
happen on the renderer side because otherwise you could disconnect while the
response is coming back and still get the response. So there's no need to
comment it in the mojo interface.

+  // alive.
+  RemoteServerConnect(string device_id) => (WebBluetoothError error);
+
+  // If a GATT connection exists for Device with |device_id| then decreases
+  // the ref count for that connection.
+  RemoteServerDisconnect(string device_id);
+
   // Returns the first GATT Service with |service_uuid| of a Bluetooth Device
   // with |device_id|.
   RemoteServerGetPrimaryService(
     string device_id,
     string service_uuid) => (
       WebBluetoothError error,
       WebBluetoothRemoteGATTService? service);
 
   // Returns the Characteristics of a GATT Service with |service_instance_id|.
   // If |quantity| == WebBluetoothGATTQueryQuantity::SINGLE, only one
@@ skipping 34 matching lines @@
     string characteristic_instance_id) => ();
 };
 
 // Classes should implement this interface and pass an associated pointer
 // bound to them to the WebBluetoothService by using SetClient. Classes
 // that do this will be notified of device events e.g. device disconnection.
 interface WebBluetoothServiceClient {
   RemoteCharacteristicValueChanged(string characteristic_instance_id,
                                    array<uint8> value);
 };