bluetooth: Add characteristicvaluechanged event

content/renderer/bluetooth/web_bluetooth_impl.cc

Index: content/renderer/bluetooth/web_bluetooth_impl.cc
diff --git a/content/renderer/bluetooth/web_bluetooth_impl.cc b/content/renderer/bluetooth/web_bluetooth_impl.cc
index ea75e9f965085cf9ec51f3bc0fb6b3241d066de6..9ac9abc4305fecd970a41ec374c8febc82b3b2b7 100644
--- a/content/renderer/bluetooth/web_bluetooth_impl.cc
+++ b/content/renderer/bluetooth/web_bluetooth_impl.cc
@@ -84,6 +84,13 @@ void WebBluetoothImpl::characteristicObjectRemoved(
                                                characteristic);
 }
 
+void WebBluetoothImpl::registerCharacteristicObject(
+    const blink::WebString& characteristic_instance_id,
+    blink::WebBluetoothGATTCharacteristic* characteristic) {
+  GetDispatcher()->registerCharacteristicObject(characteristic_instance_id,
+                                                characteristic);
+}
+
 BluetoothDispatcher* WebBluetoothImpl::GetDispatcher() {
   return BluetoothDispatcher::GetOrCreateThreadSpecificInstance(
       thread_safe_sender_.get());