bluetooth: Implement simulateGATTConnectionResponse()

third_party/WebKit/LayoutTests/resources/bluetooth/web-bluetooth-test.js

 (() => {
   let mojo_;
 
   async function loadFakeBluetoothInterfaces() {
     if(typeof mojo_ !== 'undefined') {
       return mojo_;
     }
 
     if (typeof loadMojoModules === 'undefined') {
       throw 'Mojo is required for this API.'
@@ skipping 121 matching lines @@
       // Canonicalize and convert to mojo UUIDs.
       knownServiceUUIDs.forEach((val, i, arr) => {
         knownServiceUUIDs[i] = {uuid: BluetoothUUID.getService(val)};
       });
 
       await this.fake_central_ptr_.simulatePreconnectedPeripheral(
         address, name, knownServiceUUIDs);
 
       let peripheral = this.peripherals_.get(address);
       if (peripheral === undefined) {
-        peripheral = new FakePeripheral(address, this);
+        peripheral = new FakePeripheral(address, this.fake_central_ptr_);
         this.peripherals_.set(address, peripheral);
       }
 
       return peripheral;
     }
   }
 
   class FakePeripheral {
-    constructor(address, fake_central) {
+    constructor(address, fake_central_ptr) {
       this.address = address;
-      this.fake_central_ = fake_central;
+      this.fake_central_ptr_ = fake_central_ptr;
+    }
+
+    // Simulates a GATT Connection request response with |code| for the
+    // peripheral. |code| could be an HCI Error Code from
+    // BT 4.2 Vol 2 Part D 1.3 List Of Error Codes or a number outside that
+    // range returned by specific platforms e.g. Android returns 0x101 to signal
+    // a GATT failure
+    // https://developer.android.com/reference/android/bluetooth/BluetoothGatt.html#GATT_FAILURE
+    async simulateGATTConnectionResponse({code}) {
+      await this.fake_central_ptr_.simulateGATTConnectionResponse(
+        this.address, code);
     }
   }
 
   navigator.bluetooth.test = new FakeBluetooth();
 })();