Enforce ScriptForbiddenScope and make it non-fatal.

Source/web/WebPluginContainerImpl.cpp

Index: Source/web/WebPluginContainerImpl.cpp
diff --git a/Source/web/WebPluginContainerImpl.cpp b/Source/web/WebPluginContainerImpl.cpp
index 2efad5a8f3a2500676a20fc775f1365f47b60a0a..fffd48cf4cbf216aa12cf937684e57d8db5d9501 100644
--- a/Source/web/WebPluginContainerImpl.cpp
+++ b/Source/web/WebPluginContainerImpl.cpp
@@ -702,8 +702,6 @@ void WebPluginContainerImpl::dispose()
     if (m_element && m_touchEventRequestType != TouchEventRequestTypeNone && m_element->document().frameHost())
         m_element->document().frameHost()->eventHandlerRegistry().didRemoveEventHandler(*m_element, EventHandlerRegistry::TouchEvent);
 
-    ScriptForbiddenScope::AllowSuperUnsafeScript thisShouldBeRemoved;
-
     for (size_t i = 0; i < m_pluginLoadObservers.size(); ++i)
         m_pluginLoadObservers[i]->clearPluginContainer();
     m_webPlugin->destroy();