Set file tokens for NaCl main nexe if available to enable validation caching.

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 420 matching lines @@
 IN_PROC_BROWSER_TEST_F(NaClBrowserTestNewlibStderrPM, RedirectFg1) {
   RunNaClIntegrationTest(FILE_PATH_LITERAL(
       "pm_redir_test.html?stream=stderr&thread=fg&delay_us=1000000"));
 }
 
 IN_PROC_BROWSER_TEST_F(NaClBrowserTestNewlibStderrPM, RedirectBg1) {
   RunNaClIntegrationTest(FILE_PATH_LITERAL(
       "pm_redir_test.html?stream=stderr&thread=bg&delay_us=1000000"));
 }
 
-class NaClBrowserTestNewlibExtension : public NaClBrowserTestNewlib {
- public:
-  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
-    NaClBrowserTestNewlib::SetUpCommandLine(command_line);
-    base::FilePath src_root;
-    ASSERT_TRUE(PathService::Get(base::DIR_SOURCE_ROOT, &src_root));
-
-    base::FilePath document_root;
-    ASSERT_TRUE(GetDocumentRoot(&document_root));
-
-    // Document root is relative to source root, and source root may not be CWD.
-    command_line->AppendSwitchPath(switches::kLoadExtension,
-                                   src_root.Append(document_root));
-  }
-};
-
 // TODO(ncbray) support glibc and PNaCl
 IN_PROC_BROWSER_TEST_F(NaClBrowserTestNewlibExtension, MimeHandler) {
   RunNaClIntegrationTest(FILE_PATH_LITERAL(
       "ppapi_extension_mime_handler.html"));
 }
 
 }  // namespace