Add a switch for using PNaCl Subzero and use it for -O0 translation.

chrome/test/nacl/nacl_browsertest_util.h

 // 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.
 
 #ifndef CHROME_TEST_NACL_NACL_BROWSERTEST_UTIL_H_
 #define CHROME_TEST_NACL_NACL_BROWSERTEST_UTIL_H_
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/test/base/in_process_browser_test.h"
@@ skipping 105 matching lines @@
   base::FilePath::StringType Variant() override;
 };
 
 class NaClBrowserTestPnacl : public NaClBrowserTestBase {
  public:
   base::FilePath::StringType Variant() override;
 
   bool IsAPnaclTest() override;
 };
 
+// TODO(jvoung): We can remove this and test the Subzero translator
+// with NaClBrowserTestPnacl once Subzero is automatically chosen
+// (not behind a flag).
+class NaClBrowserTestPnaclSubzero : public NaClBrowserTestPnacl {
+ public:
+  void SetUpCommandLine(base::CommandLine* command_line) override;
+};
+
 class NaClBrowserTestPnaclNonSfi : public NaClBrowserTestBase {
  public:
   void SetUpCommandLine(base::CommandLine* command_line) override;
   base::FilePath::StringType Variant() override;
 };
 
 // "Transitional" here means that this uses nacl_helper_nonsfi which has
 // nacl_helper feature for Non-SFI mode, but statically linked to newlib
 // instead of using host glibc. It is still under development.
 // TODO(hidehiko): Switch NonSfi tests to use nacl_helper_nonsfi, when
@@ skipping 95 matching lines @@
 
 #define NACL_BROWSER_TEST_F(suite, name, body) \
 IN_PROC_BROWSER_TEST_F(suite##Newlib, name) \
 body \
 IN_PROC_BROWSER_TEST_F(suite##GLibc, MAYBE_GLIBC(name)) \
 body \
 IN_PROC_BROWSER_TEST_F(suite##Pnacl, MAYBE_PNACL(name)) \
 body
 
 #endif  // CHROME_TEST_NACL_NACL_BROWSERTEST_UTIL_H_