Add BluetoothGattCharacteristicTest::StartNotifySession_Reentrant unit test

device/bluetooth/test/bluetooth_test.cc

Index: device/bluetooth/test/bluetooth_test.cc
diff --git a/device/bluetooth/test/bluetooth_test.cc b/device/bluetooth/test/bluetooth_test.cc
index 77ecddcd6521aaecd14262cea07eae5759311a14..dcfd43e3403381d905c64079ee83e6323f2c15f9 100644
--- a/device/bluetooth/test/bluetooth_test.cc
+++ b/device/bluetooth/test/bluetooth_test.cc
@@ -158,6 +158,22 @@ void BluetoothTestBase::GattErrorCallback(
     unexpected_error_callback_ = true;
 }
 
+void BluetoothTestBase::ReentrantStartNotifySessionErrorCallback(
+    Call expected,
+    BluetoothGattCharacteristic* characteristic,
+    BluetoothGattService::GattErrorCode error_code) {
+  ++error_callback_count_;
+  last_gatt_error_code_ = error_code;
+
+  if (expected == Call::EXPECTED)
+    ++actual_error_callback_calls_;
+  else
+    unexpected_error_callback_ = true;
+
+  characteristic->StartNotifySession(GetNotifyCallback(Call::EXPECTED),
+                                     GetGattErrorCallback(Call::NOT_EXPECTED));
+}
+
 base::Closure BluetoothTestBase::GetCallback(Call expected) {
   if (expected == Call::EXPECTED)
     ++expected_success_callback_calls_;
@@ -221,6 +237,17 @@ BluetoothTestBase::GetGattErrorCallback(Call expected) {
                     weak_factory_.GetWeakPtr(), expected);
 }
 
+base::Callback<void(BluetoothGattService::GattErrorCode)>
+BluetoothTestBase::GetReentrantStartNotifySessionErrorCallback(
+    Call expected,
+    BluetoothGattCharacteristic* characteristic) {
+  if (expected == Call::EXPECTED)
+    ++expected_error_callback_calls_;
+  return base::Bind(
+      &BluetoothTestBase::ReentrantStartNotifySessionErrorCallback,
+      weak_factory_.GetWeakPtr(), expected, characteristic);
+}
+
 void BluetoothTestBase::ResetEventCounts() {
   last_connect_error_code_ = BluetoothDevice::ERROR_UNKNOWN;
   callback_count_ = 0;