Unhide new media related java APIs.

Change-Id: If0b8201eaca74f51f3499b6ecdfb73088586ee24
diff --git a/media/jni/Android.mk b/media/jni/Android.mk
index a3361d4..98e1bc5 100644
--- a/media/jni/Android.mk
+++ b/media/jni/Android.mk
@@ -2,7 +2,7 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-    android_media_Crypto.cpp \
+    android_media_MediaCrypto.cpp \
     android_media_MediaCodec.cpp \
     android_media_MediaCodecList.cpp \
     android_media_MediaExtractor.cpp \