Fixed sample video corrupted in MediaCodec mode.

Change-Id: I50c5660072d40f6e297e58fd026ea04c89d6a70a
related-to-bug: 6732061
diff --git a/include/media/ICrypto.h b/include/media/ICrypto.h
index 32a2cf7..61059bd 100644
--- a/include/media/ICrypto.h
+++ b/include/media/ICrypto.h
@@ -41,7 +41,7 @@
     virtual bool requiresSecureDecoderComponent(
             const char *mime) const = 0;
 
-    virtual status_t decrypt(
+    virtual ssize_t decrypt(
             bool secure,
             const uint8_t key[16],
             const uint8_t iv[16],