Remove ENABLE_DIALOG_ELEMENT

Source/core/dom/ContextFeatures.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 34 matching lines @@
 }
 
 ContextFeatures* ContextFeatures::defaultSwitch()
 {
     DEFINE_STATIC_LOCAL(RefPtr<ContextFeatures>, instance, (ContextFeatures::create(ContextFeaturesClient::empty())));
     return instance.get();
 }
 
 bool ContextFeatures::dialogElementEnabled(Document* document)
 {
-#if ENABLE(DIALOG_ELEMENT)
     if (!document)
         return RuntimeEnabledFeatures::dialogElementEnabled();
     return document->contextFeatures()->isEnabled(document, DialogElement, RuntimeEnabledFeatures::dialogElementEnabled());
-#else
-    UNUSED_PARAM(document);
-    return false;
-#endif
 }
 
 bool ContextFeatures::styleScopedEnabled(Document* document)
 {
     if (!document)
         return RuntimeEnabledFeatures::styleScopedEnabled();
     return document->contextFeatures()->isEnabled(document, StyleScoped, RuntimeEnabledFeatures::styleScopedEnabled());
 }
 
 bool ContextFeatures::pagePopupEnabled(Document* document)
@@ skipping 40 matching lines @@
 
 void provideContextFeaturesToDocumentFrom(Document* document, Page* page)
 {
     ContextFeatures* provided = static_cast<ContextFeatures*>(RefCountedSupplement<Page, ContextFeatures>::from(page, ContextFeatures::supplementName()));
     if (!provided)
         return;
     document->setContextFeatures(provided);
 }
 
 }