Provide metadata to validator to allow faster caching.

src/trusted/service_runtime/sel_ldr.c

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <string.h>
 
 /*
  * NaCl Simple/secure ELF loader (NaCl SEL).
@@ skipping 1157 matching lines @@
    * We cannot take the nap->mu lock, since NaClAppLoadFileDynamically
    * invokes NaClElfImageLoadDynamically which in turn invokes
    * NaClSysMmapIntern resulting in a deadlock. This is not really
    * a problem since there is only one secure command channel, unless
    * embedders invokes load_irt repeatedly, which is against the protocol.
    * TODO(phosek): record load_module/load_irt state and return error
    * on repeated invocations (issue 3038).
    */
 
   suberr = NACL_FI_VAL("load_irt", NaClErrorCode,
-                       NaClAppLoadFileDynamically(nap, load_src));
+                       NaClAppLoadFileDynamically(nap, load_src, NULL));
   (*NACL_VTBL(Gio, load_src)->Close)(load_src);
 
   if (LOAD_OK != suberr) {
     NaClLog(LOG_FATAL,
             "NaClLoadIrt: Failed to load the integrated runtime (IRT). "
             "The user executable was probably not built to use the IRT.\n");
   }
   nap->irt_loaded = 1;
   rpc->result = NACL_SRPC_RESULT_OK;
 
@@ skipping 370 matching lines @@
   nacl_global_xlate_base = mem_start;
 
   NaClSandboxMemoryStartForValgrind(mem_start);
 
   _ovly_debug_event();
 }
 
 void NaClGdbHook(struct NaClApp const *nap) {
   StopForDebuggerInit(nap->mem_start);
 }