nfc: Implement device::NfcTagChromeOS.

Implemented device::NfcTag for the Chrome OS platform. With this patch,
Chrome can now interact with remote NFC tags.

BUG=316471
TEST=device_unittests

Review URL: https://codereview.chromium.org/116143009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245753 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 8 insertions, 2 deletions

diff --git a/chromeos/dbus/nfc_record_client.h b/chromeos/dbus/nfc_record_client.h
index 84e2ef9..37a277e 100644
--- a/chromeos/dbus/nfc_record_client.h
+++ b/chromeos/dbus/nfc_record_client.h
@@ -96,8 +96,9 @@ class CHROMEOS_EXPORT NfcRecordClient : public DBusClient {
     // 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.
+    // object proxy is first created or after a call to
+    // dbus::PropertySet::GetAll 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) {}
   };
@@ -115,6 +116,11 @@ class CHROMEOS_EXPORT NfcRecordClient : public DBusClient {
   virtual std::vector<dbus::ObjectPath> GetRecordsForDevice(
       const dbus::ObjectPath& device_path) = 0;
 
+  // Returns the list of record object paths associated with the given tag
+  // identified by the D-Bus object path |tag_path|.
+  virtual std::vector<dbus::ObjectPath> GetRecordsForTag(
+      const dbus::ObjectPath& tag_path) = 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;