[NaCl SDK] Remove syscalls wrappers for chmod and unlink.

native_client_sdk/src/libraries/nacl_io/kernel_intercept.h

Index: native_client_sdk/src/libraries/nacl_io/kernel_intercept.h
diff --git a/native_client_sdk/src/libraries/nacl_io/kernel_intercept.h b/native_client_sdk/src/libraries/nacl_io/kernel_intercept.h
index 7cc2f832a66f75c5bb1d13078493b4989c4e428b..ff57b8886d29f87c8395546dd338f97260037907 100644
--- a/native_client_sdk/src/libraries/nacl_io/kernel_intercept.h
+++ b/native_client_sdk/src/libraries/nacl_io/kernel_intercept.h
@@ -44,10 +44,12 @@ int ki_init(void* kernel_proxy);
 /*
  * Saves the current internal state.  This is used by test code which can
  * use this to save the current state before calling ki_init().  The
- * pushed state is restored in the next call to ki_uninit().
+ * pushed state is restored by ki_pop_state_for_testing() (or ki_uninit()).
  */
 int ki_push_state_for_testing(void);
 
+int ki_pop_state_for_testing(void);
+
 int ki_init_ppapi(void* kernel_proxy,
                   PP_Instance instance,
                   PPB_GetInterface get_browser_interface);