Cleanup: Fix content header include guards.

content/test/plugin/plugin_new_fails_test.h

Index: content/test/plugin/plugin_new_fails_test.h
diff --git a/content/test/plugin/plugin_new_fails_test.h b/content/test/plugin/plugin_new_fails_test.h
index 640a4dacccc3d0e32d332a124ceda3f4d576d532..abd85ce989658d6ff22aee7113124729bd476a91 100644
--- a/content/test/plugin/plugin_new_fails_test.h
+++ b/content/test/plugin/plugin_new_fails_test.h
@@ -2,8 +2,8 @@
 // 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"
@@ -22,4 +22,4 @@ class NewFailsTest : public PluginTest {
 
 }  // namespace NPAPIClient
 
-#endif  // CONTENT_TEST_PLUGIN_PLUGIN_PLUGIN_NPP_NEW_FAILS_TEST_H_
+#endif  // CONTENT_TEST_PLUGIN_PLUGIN_NEW_FAILS_TEST_H_