Remove runtime flag check assert on public method.

Source/web/WebFrameImpl.cpp

 /*
  * Copyright (C) 2009 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1788 matching lines @@
 {
     if (m_totalMatchCount > 0)
         ++m_findMatchMarkersVersion;
 
     m_totalMatchCount = 0;
     m_framesScopingCount = 0;
 }
 
 void WebFrameImpl::sendOrientationChangeEvent(int orientation)
 {
-    ASSERT(!RuntimeEnabledFeatures::orientationEventEnabled());
-
     if (frame())
         frame()->sendOrientationChangeEvent(orientation);
 }
 
 void WebFrameImpl::dispatchMessageEventWithOriginCheck(const WebSecurityOrigin& intendedTargetOrigin, const WebDOMEvent& event)
 {
     ASSERT(!event.isNull());
     frame()->domWindow()->dispatchMessageEventWithOriginCheck(intendedTargetOrigin.get(), event, 0);
 }
 
@@ skipping 668 matching lines @@
 
         // There is a possibility that the frame being detached was the only
         // pending one. We need to make sure final replies can be sent.
         flushCurrentScopingEffort(m_findRequestIdentifier);
 
         cancelPendingScopingEffort();
     }
 }
 
 } // namespace blink