Standardize usage of virtual/override/final in content/

content/test/plugin/plugin_private_test.h

Index: content/test/plugin/plugin_private_test.h
diff --git a/content/test/plugin/plugin_private_test.h b/content/test/plugin/plugin_private_test.h
index 6a7fdb220768046362ff44844f101bae8dfd8e04..c04b5e16cadd9d2c1d437f9785aa9113028098e2 100644
--- a/content/test/plugin/plugin_private_test.h
+++ b/content/test/plugin/plugin_private_test.h
@@ -17,8 +17,11 @@ class PrivateTest : public PluginTest {
   PrivateTest(NPP id, NPNetscapeFuncs *host_functions);
 
   // Initialize this PluginTest based on the arguments from NPP_New.
-  virtual NPError New(uint16 mode, int16 argc, const char* argn[],
-                      const char* argv[], NPSavedData* saved) override;
+  NPError New(uint16 mode,
+              int16 argc,
+              const char* argn[],
+              const char* argv[],
+              NPSavedData* saved) override;
 };
 
 }  // namespace NPAPIClient