Add implementations for move and copy operations.

Previously, we didn't have these implemented so the
host OS would emulate them by pulling the object
and pushing it to a new location. This can result
in data being lost and it is slow.

With the operations implemented, moving objects
on the same storage is instantaneous since the data
doesn't need to move. Moving objects between storages
and copying objects are both much faster since no
data has to be moved through USB.

Bug: 66679910
Test: Move and copy objects, verify they are correct
Change-Id: I38c69eee41d883af46fa2f1b9e091193b2847e8c
diff --git a/media/mtp/MtpUtils.h b/media/mtp/MtpUtils.h
index 61f9055..a2bb7e1 100644
--- a/media/mtp/MtpUtils.h
+++ b/media/mtp/MtpUtils.h
@@ -24,6 +24,10 @@
 bool parseDateTime(const char* dateTime, time_t& outSeconds);
 void formatDateTime(time_t seconds, char* buffer, int bufferLength);
 
+int copyFile(const char *fromPath, const char *toPath);
+void deleteRecursive(const char* path);
+void deletePath(const char* path);
+
 }; // namespace android
 
 #endif // _MTP_UTILS_H