Add maxTouchPoints for pointer events

public/web/WebRuntimeFeatures.h

 /*
  * 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 112 matching lines @@
 
     BLINK_EXPORT static void enableSpeechInput(bool);
     BLINK_EXPORT static bool isSpeechInputEnabled();
 
     BLINK_EXPORT static void enableSpeechSynthesis(bool);
     BLINK_EXPORT static bool isSpeechSynthesisEnabled();
 
     BLINK_EXPORT static void enableTouch(bool);
     BLINK_EXPORT static bool isTouchEnabled();
 
+    BLINK_EXPORT static void enablePointerEventsMaxTouchPoints(bool);
+    BLINK_EXPORT static bool isPointerEventsMaxTouchPointsEnabled();
+
     BLINK_EXPORT static void enableWebAnimationsCSS();
     BLINK_EXPORT static void enableWebAnimationsSVG();
 
     BLINK_EXPORT static void enableWebAudio(bool);
     BLINK_EXPORT static bool isWebAudioEnabled();
 
     BLINK_EXPORT static void enableWebGLDraftExtensions(bool);
     BLINK_EXPORT static bool isWebGLDraftExtensionsEnabled();
 
     BLINK_EXPORT static void enableWebMIDI(bool);
@@ skipping 15 matching lines @@
 
     BLINK_EXPORT static void enableOverlayFullscreenVideo(bool);
 
 private:
     WebRuntimeFeatures();
 };
 
 } // namespace WebKit
 
 #endif