fuchsia: Use new, qualified error names, disable old names.

base/rand_util_fuchsia.cc

 // Copyright 2017 The Chromium 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 "base/rand_util.h"
 
 #include <magenta/syscalls.h>
 
 #include <algorithm>
 
@@ skipping 10 matching lines @@
 void RandBytes(void* output, size_t output_length) {
   size_t remaining = output_length;
   unsigned char* cur = reinterpret_cast<unsigned char*>(output);
   do {
     // The syscall has a maximum number of bytes that can be read at once.
     size_t read_len =
         std::min(remaining, static_cast<size_t>(MX_CPRNG_DRAW_MAX_LEN));
 
     size_t actual;
     mx_status_t status = mx_cprng_draw(cur, read_len, &actual);
-    CHECK(status == NO_ERROR && read_len == actual);
+    CHECK(status == MX_OK && read_len == actual);
 
     CHECK(remaining >= actual);
     remaining -= actual;
     cur += actual;
   } while (remaining > 0);
 }
 
 }  // namespace base