Add validation caching interface.

src/trusted/service_runtime/sel_main_chrome.h

Index: src/trusted/service_runtime/sel_main_chrome.h
diff --git a/src/trusted/service_runtime/sel_main_chrome.h b/src/trusted/service_runtime/sel_main_chrome.h
index b456dbd32fcb9fb49f6dbf31f3fad90d34c19098..840342be5dbaff941be3665a56d55b2ea77410d9 100644
--- a/src/trusted/service_runtime/sel_main_chrome.h
+++ b/src/trusted/service_runtime/sel_main_chrome.h
@@ -12,6 +12,8 @@
 
 EXTERN_C_BEGIN
 
+struct NaClValidationCache;
+
 /*
  * Register the integrated runtime (IRT) library file for use by
  * NaClMainForChromium().  This takes a file descriptor, even on
@@ -20,6 +22,8 @@ EXTERN_C_BEGIN
  */
 void NaClSetIrtFileDesc(int fd);
 
+void NaClSetValidationCache(struct NaClValidationCache *cache);
+
 void NaClMainForChromium(int handle_count, const NaClHandle *handles,
                          int debug);