[DevTools] Switch from blink-based to content-based touch emulation.

Source/core/testing/InternalSettings.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 81 matching lines @@
 
     void setDefaultVideoPosterURL(const String& url, ExceptionState&);
     void setEditingBehavior(const String&, ExceptionState&);
     void setImagesEnabled(bool, ExceptionState&);
     void setMediaTypeOverride(const String& mediaType, ExceptionState&);
     void setMockScrollbarsEnabled(bool, ExceptionState&);
     void setPasswordGenerationDecorationEnabled(bool, ExceptionState&);
     void setTextAutosizingEnabled(bool, ExceptionState&);
     void setAccessibilityFontScaleFactor(float fontScaleFactor, ExceptionState&);
     void setTextAutosizingWindowSizeOverride(int width, int height, ExceptionState&);
-    void setTouchEventEmulationEnabled(bool, ExceptionState&);
     void setViewportEnabled(bool, ExceptionState&);
 
     // FIXME: This is a temporary flag and should be removed once accelerated
     // overflow scroll is ready (crbug.com/254111).
     void setCompositorDrivenAcceleratedScrollingEnabled(bool, ExceptionState&);
 
     // FIXME: This is a temporary flag and should be removed once squashing is
     // ready (crbug.com/261605).
     void setLayerSquashingEnabled(bool, ExceptionState&);
 
@@ skipping 16 matching lines @@
     Page* page() const { return m_page; }
     static const char* supplementName();
 
     Page* m_page;
     Backup m_backup;
 };
 
 } // namespace WebCore
 
 #endif