Send early ShowPress on TapDown when page isn't scrollable/pinchable.

LayoutTests/fast/events/touch/resources/touch-hover-active-tests.js

 function getHoverActiveState(e)
 {
     var states = {
         "rgb(0, 0, 255)": "default",
         "rgb(0, 255, 0)": "active",
         "rgb(255, 0, 0)": "hovered",
         "rgb(255, 255, 0)": "hoveredAndActive"
     };
 
     var color = window.getComputedStyle(e).backgroundColor;
     var result = states[color];
     if (!result)
         result = "unknown: " + color;
     return result;
 }
 
 function elementCenter(e)
 {
     return {
         x: e.offsetLeft + e.offsetWidth / 2,
         y: e.offsetTop + e.offsetHeight / 2
     }
 }
 
 function shouldBeDefault(e) { shouldBeEqualToString(e, "default"); }
 function shouldBeOnlyActive(e) { shouldBeEqualToString(e, "active"); }
 function shouldBeOnlyHovered(e) { shouldBeEqualToString(e, "hovered"); }
 function shouldBeHoveredAndActive(e) { shouldBeEqualToString(e, "hoveredAndActive"); }
+
+function hasEarlyShowPress(e, elementLocation, shouldBeActivated)
+{
+    debug("Verify hover, active aren't initially set.");
+    shouldBeDefault(e);
+
+    eventSender.gestureTapDown(elementLocation.x, elementLocation.y);
+    if (shouldBeActivated) {
+        debug("tapDown on element should activate.");
+        shouldBeHoveredAndActive(e);
+    } else {
+        debug("tapdown on element should not activate.");
+        shouldBeDefault(e);
+    }
+
+    debug("showPress on element should " + (shouldBeActivated ? "keep hover and active." : "activate."));
+    eventSender.gestureShowPress(elementLocation.x, elementLocation.y);
+    shouldBeHoveredAndActive(e);
+    eventSender.gestureTapCancel(elementLocation.x, elementLocation.y);
+}