Add BluetoothGattCharacteristicTest::StartNotifySession_Reentrant unit test

device/bluetooth/test/bluetooth_test.h

Index: device/bluetooth/test/bluetooth_test.h
diff --git a/device/bluetooth/test/bluetooth_test.h b/device/bluetooth/test/bluetooth_test.h
index c840935138d6df9751380d3e75eb71ebccdfe27c..17f4ed717ccf3bb1ccd069ae82caef73f3ba6db2 100644
--- a/device/bluetooth/test/bluetooth_test.h
+++ b/device/bluetooth/test/bluetooth_test.h
@@ -146,6 +146,11 @@ class BluetoothTestBase : public testing::Test {
   virtual void SimulateGattCharacteristicSetNotifyWillFailSynchronouslyOnce(
       BluetoothGattCharacteristic* characteristic) {}
 
+  // Simulates a Characteristic Set Notify operation failing asynchronously once
+  // for an unknown reason.
+  virtual void SimulateGattCharacteristicSetNotifyWillFailAsynchronouslyOnce(
+      BluetoothGattCharacteristic* characteristic) {}
+
   // Simulates a Characteristic Changed operation with updated |value|.
   virtual void SimulateGattCharacteristicChanged(
       BluetoothGattCharacteristic* characteristic,
@@ -244,6 +249,10 @@ class BluetoothTestBase : public testing::Test {
   void ConnectErrorCallback(Call expected,
                             enum BluetoothDevice::ConnectErrorCode);
   void GattErrorCallback(Call expected, BluetoothGattService::GattErrorCode);
+  void ReentrantStartNotifySessionErrorCallback(
+      Call expected,
+      BluetoothGattCharacteristic* characteristic,
+      BluetoothGattService::GattErrorCode error_code);
 
   // Accessors to get callbacks bound to this fixture:
   base::Closure GetCallback(Call expected);
@@ -259,6 +268,10 @@ class BluetoothTestBase : public testing::Test {
   BluetoothDevice::ConnectErrorCallback GetConnectErrorCallback(Call expected);
   base::Callback<void(BluetoothGattService::GattErrorCode)>
   GetGattErrorCallback(Call expected);
+  base::Callback<void(BluetoothGattService::GattErrorCode)>
+  GetReentrantStartNotifySessionErrorCallback(
+      Call expected,
+      BluetoothGattCharacteristic* characteristic);
 
   // Reset all event count members to 0.
   void ResetEventCounts();