Allow raw dex files to be read from arrays of base64 encoded bytes.

This allows tests to be run without opening files on local disk.

Change-Id: I05296bfba584d76ae272d4905b5c45ae10687bc6
diff --git a/src/base64.h b/src/base64.h
new file mode 100644
index 0000000..320148d
--- /dev/null
+++ b/src/base64.h
@@ -0,0 +1,14 @@
+// Copyright 2011 Google Inc. All Rights Reserved.
+
+#ifndef ART_SRC_BASE64_H_
+#define ART_SRC_BASE64_H_
+
+#include "src/globals.h"
+
+namespace art {
+
+byte* DecodeBase64(const char* src, size_t size, size_t* dst_size);
+
+}  // namespace art
+
+#endif  // ART_SRC_BASE64_H_