chromeos: Add GetFileInfo methods for MTPDClient.

chromeos/dbus/mock_media_transfer_protocol_daemon_client.h

Index: chromeos/dbus/mock_media_transfer_protocol_daemon_client.h
===================================================================
--- chromeos/dbus/mock_media_transfer_protocol_daemon_client.h	(revision 153859)
+++ chromeos/dbus/mock_media_transfer_protocol_daemon_client.h	(working copy)
@@ -46,6 +46,14 @@
                                   uint32,
                                   const ReadFileCallback&,
                                   const ErrorCallback&));
+  MOCK_METHOD4(GetFileInfoByPath, void(const std::string&,
+                                       const std::string&,
+                                       const GetFileInfoCallback&,
+                                       const ErrorCallback&));
+  MOCK_METHOD4(GetFileInfoById, void(const std::string&,
+                                     uint32,
+                                     const GetFileInfoCallback&,
+                                     const ErrorCallback&));
   MOCK_METHOD1(SetUpConnections, void(const MTPStorageEventHandler&));
 };