Adding Hashed Address to BluetoothLowEnergyDeviceMac

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 9f2ca5c57c914a3833e529cbec144f7305ee532f..a23f165c9dcbe0809feead6226bac1e5e319eb12 100644
--- a/device/bluetooth/bluetooth_low_energy_device_mac.h
+++ b/device/bluetooth/bluetooth_low_energy_device_mac.h
@@ -13,13 +13,15 @@
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/mac/sdk_forward_declarations.h"
+#include "crypto/sha2.h"
 #include "device/bluetooth/bluetooth_device_mac.h"
 
 namespace device {
 
 class BluetoothLowEnergyDiscoverManagerMac;
 
-class BluetoothLowEnergyDeviceMac : public BluetoothDeviceMac {
+class DEVICE_BLUETOOTH_EXPORT BluetoothLowEnergyDeviceMac
+    : public BluetoothDeviceMac {
  public:
   BluetoothLowEnergyDeviceMac(CBPeripheral* peripheral,
                               NSDictionary* advertisementData,
@@ -84,8 +86,13 @@ class BluetoothLowEnergyDeviceMac : public BluetoothDeviceMac {
 
   static std::string GetPeripheralIdentifier(CBPeripheral* peripheral);
 
+  // Hashes and truncates the peripheral identifier to deterministically
+  // construct an address.
+  static std::string GetPeripheralHashAddress(CBPeripheral* peripheral);
+
  private:
   friend class BluetoothAdapterMac;
+  friend class BluetoothAdapterMacTest;
 
   // CoreBluetooth data structure.
   base::scoped_nsobject<CBPeripheral> peripheral_;
@@ -96,6 +103,13 @@ class BluetoothLowEnergyDeviceMac : public BluetoothDeviceMac {
   // Whether the device is connectable.
   bool connectable_;
 
+  // The peripheral's identifier, as returned by [CBPeripheral identifier].
+  std::string identifier_;
+
+  // A local address for the device created by hashing the peripheral
+  // identifier.
+  std::string hash_address_;
+
   // Stores the time of the most recent call to Update().
   NSDate* last_update_time = nil;