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

third_party/WebKit/Source/core/css/MediaQueryEvaluator.cpp

Index: third_party/WebKit/Source/core/css/MediaQueryEvaluator.cpp
diff --git a/third_party/WebKit/Source/core/css/MediaQueryEvaluator.cpp b/third_party/WebKit/Source/core/css/MediaQueryEvaluator.cpp
index e2b803dde3dd69a305066612dd325f2b024fe6a9..7e8a75ffe5131961bf1a153ef528851a78059ef5 100644
--- a/third_party/WebKit/Source/core/css/MediaQueryEvaluator.cpp
+++ b/third_party/WebKit/Source/core/css/MediaQueryEvaluator.cpp
@@ -644,11 +644,7 @@ static bool hoverMediaFeatureEval(const MediaQueryExpValue& value,
   if (!value.isID)
     return false;
 
-  if (value.id == CSSValueOnDemand)
-    UseCounter::count(mediaValues.document(), UseCounter::CSSValueOnDemand);
-
   return (hover == HoverTypeNone && value.id == CSSValueNone) ||
-         (hover == HoverTypeOnDemand && value.id == CSSValueOnDemand) ||
          (hover == HoverTypeHover && value.id == CSSValueHover);
 }
 
@@ -666,9 +662,6 @@ static bool anyHoverMediaFeatureEval(const MediaQueryExpValue& value,
   switch (value.id) {
     case CSSValueNone:
       return availableHoverTypes & HoverTypeNone;
-    case CSSValueOnDemand:
-      UseCounter::count(mediaValues.document(), UseCounter::CSSValueOnDemand);
-      return availableHoverTypes & HoverTypeOnDemand;
     case CSSValueHover:
       return availableHoverTypes & HoverTypeHover;
     default: