MTP: Improve argument checking in SendObjectInfo

In particular, make sure the parent is a folder and make sure file
does not already exist.

Change-Id: Ifa870faba3285f03a92025d9e82f93fed78a761c
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/media/mtp/MtpDatabase.h b/media/mtp/MtpDatabase.h
index 9929805..6dcb931 100644
--- a/media/mtp/MtpDatabase.h
+++ b/media/mtp/MtpDatabase.h
@@ -85,8 +85,9 @@
                                             MtpDataPacket& packet) = 0;
 
     virtual MtpResponseCode         getObjectFilePath(MtpObjectHandle handle,
-                                            MtpString& filePath,
-                                            int64_t& fileLength) = 0;
+                                            MtpString& outFilePath,
+                                            int64_t& outFileLength,
+                                            MtpObjectFormat& outFormat) = 0;
 
     virtual MtpResponseCode         deleteFile(MtpObjectHandle handle) = 0;