bluetooth: Implement simulateGATTConnectionResponse()

device/bluetooth/test/fake_peripheral.h

Index: device/bluetooth/test/fake_peripheral.h
diff --git a/device/bluetooth/test/fake_peripheral.h b/device/bluetooth/test/fake_peripheral.h
index 56c17b2a1efd6f74e5f074963ff2d2d3ea9ee9d8..a592ec81342adb751b3924c1de460214ebc2ff26 100644
--- a/device/bluetooth/test/fake_peripheral.h
+++ b/device/bluetooth/test/fake_peripheral.h
@@ -31,6 +31,11 @@ class FakePeripheral : public device::BluetoothDevice {
   // BluetoothDevice::GetUUIDs().
   void SetServiceUUIDs(UUIDSet service_uuids);
 
+  // If |code| is kHCISuccess calls a pending success callback for
+  // CreateGattConnection. Otherwise calls a pending error callback
+  // with the ConnectErrorCode corresponding to |code|.
+  void SimulateGATTConnectionResponse(uint16_t code);
+
   // BluetoothDevice overrides:
   uint32_t GetBluetoothClass() const override;
 #if defined(OS_CHROMEOS) || defined(OS_LINUX)
@@ -75,6 +80,9 @@ class FakePeripheral : public device::BluetoothDevice {
       const device::BluetoothUUID& uuid,
       const ConnectToServiceCallback& callback,
       const ConnectToServiceErrorCallback& error_callback) override;
+  void CreateGattConnection(
+      const GattConnectionCallback& callback,
+      const ConnectErrorCallback& error_callback) override;
 
  protected:
   void CreateGattConnectionImpl() override;
@@ -86,6 +94,10 @@ class FakePeripheral : public device::BluetoothDevice {
   bool gatt_connected_;
   UUIDSet service_uuids_;
 
+  using CreateGattConnectionCallbacks =
+      std::pair<GattConnectionCallback, ConnectErrorCallback>;
+  std::queue<CreateGattConnectionCallbacks> create_gatt_connection_callbacks_;
+
   DISALLOW_COPY_AND_ASSIGN(FakePeripheral);
 };