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

Source/core/testing/InternalSettings.cpp

 /*
  * 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 179 matching lines @@
 void InternalSettings::setExperimentalContentSecurityPolicyFeaturesEnabled(bool enabled)
 {
     RuntimeEnabledFeatures::setExperimentalContentSecurityPolicyFeaturesEnabled(enabled);
 }
 
 void InternalSettings::setOverlayScrollbarsEnabled(bool enabled)
 {
     RuntimeEnabledFeatures::setOverlayScrollbarsEnabled(enabled);
 }
 
+// FIXME: Remove this method and touchEventEmulationEnabled setting entirely.
 void InternalSettings::setTouchEventEmulationEnabled(bool enabled, ExceptionState& exceptionState)
 {
     InternalSettingsGuardForSettings();
     settings()->setTouchEventEmulationEnabled(enabled);
 }
 
 void InternalSettings::setViewportEnabled(bool enabled, ExceptionState& exceptionState)
 {
     InternalSettingsGuardForSettings();
     settings()->setViewportEnabled(enabled);
@@ skipping 147 matching lines @@
     settings()->setDefaultVideoPosterURL(url);
 }
 
 void InternalSettings::setPasswordGenerationDecorationEnabled(bool enabled, ExceptionState& exceptionState)
 {
     InternalSettingsGuardForSettings();
     settings()->setPasswordGenerationDecorationEnabled(enabled);
 }
 
 }