Remove unused, unimplemented and no-op methods from MIMETypeRegistry.

Source/core/html/HTMLPlugInImageElement.cpp

 /*
  * Copyright (C) 2008, 2011, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 226 matching lines @@
     // If the plug-in element already contains a subframe, loadOrRedirectSubframe will re-use it. Otherwise,
     // it will create a new frame and set it as the RenderPart's widget, causing what was previously
     // in the widget to be torn down.
     return loadOrRedirectSubframe(completedURL, getNameAttribute(), true);
 }
 
 bool HTMLPlugInImageElement::loadPlugin(const KURL& url, const String& mimeType, const Vector<String>& paramNames, const Vector<String>& paramValues, bool useFallback)
 {
     Frame* frame = document()->frame();
 
-    // Application plug-ins are plug-ins implemented by the user agent, for example Qt plug-ins,
-    // as opposed to third-party code such as Flash. The user agent decides whether or not they are
-    // permitted, rather than WebKit.
-    if (!frame->loader()->allowPlugins(AboutToInstantiatePlugin) && !MIMETypeRegistry::isApplicationPluginMIMEType(mimeType))
+    if (!frame->loader()->allowPlugins(AboutToInstantiatePlugin))
         return false;
 
     if (!pluginIsLoadable(url, mimeType))
         return false;
 
     RenderEmbeddedObject* renderer = renderEmbeddedObject();
 
     // FIXME: This code should not depend on renderer!
     if (!renderer || useFallback)
         return false;
@@ skipping 65 matching lines @@
         renderEmbeddedObject()->setPluginUnavailabilityReason(RenderEmbeddedObject::PluginBlockedByContentSecurityPolicy);
         return false;
     }
 
     if (frame->loader() && !frame->loader()->mixedContentChecker()->canRunInsecureContent(document()->securityOrigin(), url))
         return false;
     return true;
 }
 
 } // namespace WebCore