nfc: Various fixes to the NFC D-Bus client in chromeos/dbus.

chromeos/dbus/nfc_record_client.h

 // Copyright 2013 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 CHROMEOS_DBUS_NFC_RECORD_CLIENT_H_
 #define CHROMEOS_DBUS_NFC_RECORD_CLIENT_H_
 
 #include <string>
 
 #include "chromeos/chromeos_export.h"
@@ skipping 74 matching lines @@
     virtual void RecordAdded(const dbus::ObjectPath& object_path) {}
 
     // Called when a remote NFC record with the object path |object_path| is
     // removed from the set of known records.
     virtual void RecordRemoved(const dbus::ObjectPath& object_path) {}
 
     // Called when the record property with the name |property_name| on record
     // with object path |object_path| has acquired a new value.
     virtual void RecordPropertyChanged(const dbus::ObjectPath& object_path,
                                        const std::string& property_name) {}
+
+    // Called when all properties for the record with object path |object_path|
+    // have been received. This method will be called after
+    // Observer::RecordPropertyChanged has been called for all properties that
+    // were received through the initial property fetch that is done when the
+    // object proxy is first created. Observers can use this method to be
+    // notified when all existing properties of a record are available for use.
+    virtual void RecordPropertiesReceived(
+        const dbus::ObjectPath& object_path) {}
   };
 
-  // NDEF records can be created via the Tag and Device interfaces by passing a
-  // dictionary of strings containing the record properties and their values to
-  // their respective API methods.
-  typedef std::map<std::string, std::string> Attributes;
-
   virtual ~NfcRecordClient();
 
   // Adds and removes observers for events on all remote NFC records. Check the
   // |object_path| parameter of observer methods to determine which record is
   // issuing the event.
   virtual void AddObserver(Observer* observer) = 0;
   virtual void RemoveObserver(Observer* observer) = 0;
 
   // Obtain the properties for the NFC record with object path |object_path|;
   // any values should be copied if needed.
   virtual Properties* GetProperties(const dbus::ObjectPath& object_path) = 0;
 
   // Creates the instance.
   static NfcRecordClient* Create(DBusClientImplementationType type,
                                  NfcDeviceClient* device_client,
                                  NfcTagClient* tag_client);
 
  protected:
   friend class NfcClientTest;
 
   NfcRecordClient();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(NfcRecordClient);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_NFC_RECORD_CLIENT_H_