Refactor touch hit-testing hover/active tests.

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"); }