bluetooth: android: Implement Characteristic GetIdentifier, fix Service IDs too.

device/bluetooth/bluetooth_gatt_service.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_GATT_SERVICE_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_GATT_SERVICE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 141 matching lines @@
   // peripheral role events. If |delegate| is NULL, then this service will
   // employ a default behavior when responding to read and write requests based
   // on the cached value of its characteristics and descriptors at a given time.
   static BluetoothGattService* Create(const BluetoothUUID& uuid,
                                       bool is_primary,
                                       Delegate* delegate);
 
   // Identifier used to uniquely identify a GATT service object. This is
   // different from the service UUID: while multiple services with the same UUID
   // can exist on a Bluetooth device, the identifier returned from this method
-  // is unique among all services of a device. The contents of the identifier
+  // is unique among all services on the adapter. The contents of the identifier
   // are platform specific.
   virtual std::string GetIdentifier() const = 0;
 
   // The Bluetooth-specific UUID of the service.
   virtual BluetoothUUID GetUUID() const = 0;
 
   // Returns true, if this service hosted locally. If false, then this service
   // represents a remote GATT service.
   virtual bool IsLocal() const = 0;
 
@@ skipping 48 matching lines @@
  protected:
   BluetoothGattService();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BluetoothGattService);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_GATT_SERVICE_H_