Standardize usage of virtual/override/final in content/

content/shell/tools/plugin/Tests/NPDeallocateCalledBeforeNPShutdown.cpp

Index: content/shell/tools/plugin/Tests/NPDeallocateCalledBeforeNPShutdown.cpp
diff --git a/content/shell/tools/plugin/Tests/NPDeallocateCalledBeforeNPShutdown.cpp b/content/shell/tools/plugin/Tests/NPDeallocateCalledBeforeNPShutdown.cpp
index 492536b32534727ad73a71ca86c23d5dfc74f888..f98ef5c0662797251164a599c23ed47c7404f2ee 100644
--- a/content/shell/tools/plugin/Tests/NPDeallocateCalledBeforeNPShutdown.cpp
+++ b/content/shell/tools/plugin/Tests/NPDeallocateCalledBeforeNPShutdown.cpp
@@ -44,8 +44,7 @@ private:
     // This is the test object.
     class TestObject : public Object<TestObject> {
     public:
-        virtual ~TestObject()
-        {
+     ~TestObject() override {
             if (wasShutdownCalled)
                 indicateTestFailure();
         }
@@ -70,19 +69,18 @@ private:
         }
     };
 
-    virtual NPError NPP_New(NPMIMEType pluginType,
-                            uint16_t mode,
-                            int16_t argc,
-                            char* argn[],
-                            char* argv[],
-                            NPSavedData* saved) override {
+    NPError NPP_New(NPMIMEType pluginType,
+                    uint16_t mode,
+                    int16_t argc,
+                    char* argn[],
+                    char* argv[],
+                    NPSavedData* saved) override {
         registerNPShutdownFunction(shutdown);
 
         return NPERR_NO_ERROR;
     }
 
-    virtual NPError NPP_GetValue(NPPVariable variable, void *value) override
-    {
+    NPError NPP_GetValue(NPPVariable variable, void* value) override {
         if (variable != NPPVpluginScriptableNPObject)
             return NPERR_GENERIC_ERROR;