Drop hover:on-demand support & let touch-screens report "none" instead.

third_party/WebKit/public/platform/PointerProperties.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PointerProperties_h
 #define PointerProperties_h
 
 namespace blink {
 
 // Bit field values indicating available pointer types.
 enum PointerType {
   PointerTypeNone = 1 << 0,
   PointerTypeCoarse = 1 << 1,
   PointerTypeFine = 1 << 2
 };
 
 // Bit field values indicating available hover types.
-enum HoverType {
-  HoverTypeNone = 1 << 0,
-  // Indicates that the primary pointing system can hover, but it requires
-  // a significant action on the user's part. e.g. hover on "long press".
-  HoverTypeOnDemand = 1 << 1,
-  HoverTypeHover = 1 << 2
-};
+enum HoverType { HoverTypeNone = 1 << 0, HoverTypeHover = 1 << 1 };
 }
 
 #endif