Allow setting runtime-enabled features from a string.

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 23 matching lines @@
 #include "platform/RuntimeEnabledFeatures.h"
 #include "web/WebMediaPlayerClientImpl.h"
 
 namespace blink {
 
 void WebRuntimeFeatures::enableExperimentalFeatures(bool enable)
 {
     RuntimeEnabledFeatures::setExperimentalFeaturesEnabled(enable);
 }
 
+void WebRuntimeFeatures::enableFeatureFromString(const WebString& name, bool enable)
+{
+    RuntimeEnabledFeatures::setFeatureEnabledFromString(name, enable);
+}
+
 void WebRuntimeFeatures::enableBleedingEdgeFastPaths(bool enable)
 {
     ASSERT(enable);
     RuntimeEnabledFeatures::setBleedingEdgeFastPathsEnabled(enable);
     RuntimeEnabledFeatures::setWebAnimationsAPIEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableBlinkScheduler(bool enable)
 {
     RuntimeEnabledFeatures::setBlinkSchedulerEnabled(enable);
@@ skipping 253 matching lines @@
 {
     RuntimeEnabledFeatures::setReducedReferrerGranularityEnabled(enable);
 }
 
 void WebRuntimeFeatures::enablePushMessagingData(bool enable)
 {
     RuntimeEnabledFeatures::setPushMessagingDataEnabled(enable);
 }
 
 } // namespace blink