Move ENABLE_MEDIA_CAPTURE to a runtime flag

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 122 matching lines @@
 void WebRuntimeFeatures::enableMediaPlayer(bool enable)
 {
     RuntimeEnabledFeatures::setMediaEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableSubpixelFontScaling(bool enable)
 {
     RuntimeEnabledFeatures::setSubpixelFontScalingEnabled(enable);
 }
 
+void WebRuntimeFeatures::enableMediaCapture(bool enable)
+{
+    RuntimeEnabledFeatures::setMediaCaptureEnabled(enable);
+}
+
 void WebRuntimeFeatures::enableMediaSource(bool enable)
 {
     RuntimeEnabledFeatures::setMediaSourceEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableMediaStream(bool enable)
 {
     RuntimeEnabledFeatures::setMediaStreamEnabled(enable);
 }
 
@@ skipping 131 matching lines @@
 {
     RuntimeEnabledFeatures::setLayerSquashingEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableShowModalDialog(bool enable)
 {
     RuntimeEnabledFeatures::setShowModalDialogEnabled(enable);
 }
 
 } // namespace blink