Refactor WebBluetoothServiceClient in the web_bluetooth.mojom

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

Index: third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom
diff --git a/third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom b/third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom
index 4a25bce715013444b77a26428cb1c31372b3f213..7e8b8f69112b6bda16dfcb2db2714b314a9c802b 100644
--- a/third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom
+++ b/third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.mojom
@@ -156,11 +156,6 @@ struct WebBluetoothRemoteGATTDescriptor {
 // 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);
-
   RequestDevice(WebBluetoothRequestDeviceOptions options)
     => (WebBluetoothResult result, WebBluetoothDevice? device);
 
@@ -168,7 +163,11 @@ interface WebBluetoothService {
   // 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 alive.
-  RemoteServerConnect(WebBluetoothDeviceId device_id) => (WebBluetoothResult result);
+  // Returns the result of the connection request and a client request if the
+  // connection was successful and there was no previous WebBluetoothServerClient.
+  RemoteServerConnect(WebBluetoothDeviceId device_id) => (
+    WebBluetoothResult result,
+    associated WebBluetoothServerClient&? client_request);
 
   // If a GATT connection exists for Device identified by |device_id| then
   // decreases the ref count for that connection.
@@ -219,8 +218,13 @@ interface WebBluetoothService {
 
   // Starts notifications for the characteristic identified by
   // |characteristic_instance_id|.
+  // Returns the result of the start notifications request and a client
+  // request if the gatt operation was successful and there was no previous
+  // WebBluetoothCharacteristicClient.
   RemoteCharacteristicStartNotifications(
-    string characteristic_instance_id) => (WebBluetoothResult result);
+    string characteristic_instance_id) => (
+      WebBluetoothResult result,
+      associated WebBluetoothCharacteristicClient&? client_request);
 
   // Stops notifications for the characteristic identified by
   // |characteristic_instance_id|.
@@ -259,15 +263,15 @@ interface WebBluetoothService {
     array<uint8> value) => (WebBluetoothResult result);
 };
 
-// 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 {
-  // The characteristic identified by |characteristic_instance_id| has received
-  // a notification of value change.
-  RemoteCharacteristicValueChanged(string characteristic_instance_id,
-                                   array<uint8> value);
+// Classes that implement this interface will be notified of characteristic
+// events.
+interface WebBluetoothCharacteristicClient {
+  // Called when we receive a notification for the characteristic.
+  RemoteCharacteristicValueChanged(array<uint8> value);
+};
 
-  // The device identified by |device_id| has been disconnected.
-  GattServerDisconnected(WebBluetoothDeviceId device_id);
+// Classes that implement this interface will be notified of device events.
+interface WebBluetoothServerClient {
+  // Called when a device disconnects.
+  GATTServerDisconnected();
 };