Add a Subzero variant of Chrome PNaCl error handling test.

chrome/test/nacl/nacl_browsertest.cc

 // Copyright (c) 2012 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 <stdio.h>
 #if defined(OS_POSIX)
 #include <unistd.h>
 #elif defined(OS_WIN)
 #include <windows.h>
 #endif
@@ skipping 363 matching lines @@
   // If the mask excludes debugging, it's as if the flag was off.
   RunLoadTest(FILE_PATH_LITERAL(
       "pnacl_debug_url.html?nmf_file=pnacl_has_debug_flag_off.nmf"));
 }
 
 IN_PROC_BROWSER_TEST_F(NaClBrowserTestPnacl,
                        MAYBE_PNACL(PnaclErrorHandling)) {
   RunNaClIntegrationTest(FILE_PATH_LITERAL("pnacl_error_handling.html"));
 }
 
+// Test Subzero. Subzero is triggered by the O0 option so reuse
+// test harnesses that use "optlevel": 0.
+IN_PROC_BROWSER_TEST_F(NaClBrowserTestPnaclSubzero,
+                       MAYBE_PNACL(PnaclErrorHandling)) {
+  RunNaClIntegrationTest(FILE_PATH_LITERAL("pnacl_error_handling.html"));
+}
+
 IN_PROC_BROWSER_TEST_F(NaClBrowserTestPnacl,
                        MAYBE_PNACL(PnaclNMFOptionsO0)) {
   RunLoadTest(FILE_PATH_LITERAL("pnacl_options.html?use_nmf=o_0"));
 }
 
-// Test Subzero. Subzero is triggered by the O0 option so reuse that test
-// pexe and test harness.
+// Test Subzero. Subzero is triggered by the O0 option so reuse
+// test harnesses that use "optlevel": 0.
 IN_PROC_BROWSER_TEST_F(NaClBrowserTestPnaclSubzero,
                        MAYBE_PNACL(PnaclNMFOptionsO0)) {
   RunLoadTest(FILE_PATH_LITERAL("pnacl_options.html?use_nmf=o_0"));
 }
 
 IN_PROC_BROWSER_TEST_F(NaClBrowserTestPnacl,
                        MAYBE_PNACL(PnaclNMFOptionsO2)) {
   RunLoadTest(FILE_PATH_LITERAL("pnacl_options.html?use_nmf=o_2"));
 }
 
@@ skipping 19 matching lines @@
 }
 
 // TODO(ncbray) support glibc and PNaCl
 // flaky: crbug.com/375894
 IN_PROC_BROWSER_TEST_F(NaClBrowserTestNewlibExtension, DISABLED_MimeHandler) {
   RunNaClIntegrationTest(FILE_PATH_LITERAL(
       "ppapi_extension_mime_handler.html"));
 }
 
 }  // namespace