Renaming BluetoothDeviceMac as BluetoothClassicDeviceMac

device/bluetooth/bluetooth_low_energy_device_mac.h

Index: device/bluetooth/bluetooth_low_energy_device_mac.h
diff --git a/device/bluetooth/bluetooth_low_energy_device_mac.h b/device/bluetooth/bluetooth_low_energy_device_mac.h
index 5fa43355c83eb3967560df43b9edb3a41d1e7e13..0a0ebee7b252274e9aefa9af68fc6311919dc8ae 100644
--- a/device/bluetooth/bluetooth_low_energy_device_mac.h
+++ b/device/bluetooth/bluetooth_low_energy_device_mac.h
@@ -70,6 +70,9 @@ class BluetoothLowEnergyDeviceMac : public BluetoothDevice {
       const GattConnectionCallback& callback,
       const ConnectErrorCallback& error_callback) override;
 
+  // Returns the time of the most recent call to Update().
+  NSDate* GetLastCallToUpdate();
+
  protected:
   // BluetoothDevice override.
   std::string GetDeviceName() const override;
@@ -93,6 +96,9 @@ class BluetoothLowEnergyDeviceMac : public BluetoothDevice {
   // Whether the device is connectable.
   bool connectable_;
 
+  // Stores the time of the most recent call to Update().
+  NSDate* last_call_to_update_ = nil;
+
   DISALLOW_COPY_AND_ASSIGN(BluetoothLowEnergyDeviceMac);
 };