Prepare for switching to libziparchive.

Bug: 19765860
Change-Id: I58249d28fbc4975428d0dcac5107d1994c35676c
diff --git a/fastboot/fastboot.h b/fastboot/fastboot.h
index fc5d4f4..1786e49 100644
--- a/fastboot/fastboot.h
+++ b/fastboot/fastboot.h
@@ -31,6 +31,10 @@
 
 #include "usb.h"
 
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
 struct sparse_file;
 
 /* protocol.c - fastboot protocol */
@@ -67,7 +71,13 @@
 char *mkmsg(const char *fmt, ...);
 void die(const char *fmt, ...);
 
+void get_my_path(char *path);
+
 /* Current product */
 extern char cur_product[FB_RESPONSE_SZ + 1];
 
+#if defined(__cplusplus)
+}
+#endif
+
 #endif