Restore RuntimeEnabled=PrefixedEncryptedMedia to MediaKeyError.idl.

Source/web/WebRuntimeFeatures.cpp

 /*
  * Copyright (C) 2013 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 65 matching lines @@
 }
 
 void WebRuntimeFeatures::enableDisplayList2dCanvas(bool enable)
 {
     RuntimeEnabledFeatures::setDisplayList2dCanvasEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableEncryptedMedia(bool enable)
 {
     RuntimeEnabledFeatures::setEncryptedMediaEnabled(enable);
-    // FIXME: Hack to allow MediaKeyError to be enabled for either version.
-    RuntimeEnabledFeatures::setEncryptedMediaAnyVersionEnabled(
-        RuntimeEnabledFeatures::encryptedMediaEnabled()
-        || RuntimeEnabledFeatures::prefixedEncryptedMediaEnabled());
 }
 
 bool WebRuntimeFeatures::isEncryptedMediaEnabled()
 {
     return RuntimeEnabledFeatures::encryptedMediaEnabled();
 }
 
 void WebRuntimeFeatures::enablePrefixedEncryptedMedia(bool enable)
 {
     RuntimeEnabledFeatures::setPrefixedEncryptedMediaEnabled(enable);
-    // FIXME: Hack to allow MediaKeyError to be enabled for either version.
-    RuntimeEnabledFeatures::setEncryptedMediaAnyVersionEnabled(
-        RuntimeEnabledFeatures::encryptedMediaEnabled()
-        || RuntimeEnabledFeatures::prefixedEncryptedMediaEnabled());
 }
 
 bool WebRuntimeFeatures::isPrefixedEncryptedMediaEnabled()
 {
     return RuntimeEnabledFeatures::prefixedEncryptedMediaEnabled();
 }
 
 void WebRuntimeFeatures::enableExperimentalCanvasFeatures(bool enable)
 {
     RuntimeEnabledFeatures::setExperimentalCanvasFeaturesEnabled(enable);
@@ skipping 168 matching lines @@
 {
     RuntimeEnabledFeatures::setShowModalDialogEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableLaxMixedContentChecking(bool enable)
 {
     RuntimeEnabledFeatures::setLaxMixedContentCheckingEnabled(enable);
 }
 
 } // namespace blink