Non-SFI mode: Implement nacl_irt_random only for nacl_helper_nonsfi.

src/nonsfi/irt/irt_random.h

Index: src/nonsfi/irt/irt_random.h
diff --git a/src/nonsfi/linux/irt_exception_handling.h b/src/nonsfi/irt/irt_random.h
similarity index 52%
copy from src/nonsfi/linux/irt_exception_handling.h
copy to src/nonsfi/irt/irt_random.h
index 4a69c1344274ae9fffbeb94fb1091d8ec85dfe79..e84e325ef54ea6434a59c3dc50735ed583398e0a 100644
--- a/src/nonsfi/linux/irt_exception_handling.h
+++ b/src/nonsfi/irt/irt_random.h
@@ -4,15 +4,15 @@
  * found in the LICENSE file.
  */
 
-#ifndef NATIVE_CLIENT_SRC_NONSFI_IRT_IRT_EXCEPTION_HANDLING_H_
-#define NATIVE_CLIENT_SRC_NONSFI_IRT_IRT_EXCEPTION_HANDLING_H_ 1
+#ifndef NATIVE_CLIENT_SRC_NONSFI_IRT_IRT_RANDOM_H_
+#define NATIVE_CLIENT_SRC_NONSFI_IRT_IRT_RANDOM_H_ 1
 
 #include "native_client/src/include/nacl_base.h"
 
 EXTERN_C_BEGIN
 
-/* Initialize signal handler at startup before entering sandbox. */
-void nonsfi_initialize_signal_handler(void);
+/* Initializes the urandom fd by the given |fd|. */
+void nonsfi_set_urandom_fd(int fd);
 
 EXTERN_C_END