Cleanup: Fix content header include guards.

content/test/plugin/plugin_new_fails_test.h

 // Copyright (c) 2011 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 CONTENT_TEST_PLUGIN_PLUGIN_PLUGIN_NEW_FAILS_TEST_H_
-#define CONTENT_TEST_PLUGIN_PLUGIN_PLUGIN_NEW_FAILS_TEST_H_
+#ifndef CONTENT_TEST_PLUGIN_PLUGIN_NEW_FAILS_TEST_H_
+#define CONTENT_TEST_PLUGIN_PLUGIN_NEW_FAILS_TEST_H_
 
 #include "base/compiler_specific.h"
 #include "content/test/plugin/plugin_test.h"
 
 namespace NPAPIClient {
 
 class NewFailsTest : public PluginTest {
  public:
   NewFailsTest(NPP id, NPNetscapeFuncs *host_functions);
   NPError New(uint16 mode,
               int16 argc,
               const char* argn[],
               const char* argv[],
               NPSavedData* saved) override;
 };
 
 }  // namespace NPAPIClient
 
-#endif  // CONTENT_TEST_PLUGIN_PLUGIN_PLUGIN_NPP_NEW_FAILS_TEST_H_
+#endif  // CONTENT_TEST_PLUGIN_PLUGIN_NEW_FAILS_TEST_H_