Expose fractional TouchEvent coordinates

LayoutTests/fast/events/touch/touch-coords-in-zoom-and-scroll.html

 <script src="../../../resources/js-test.js"></script>
 <style>
     #pusher {
         width: 1000px;
         height: 1000px;
         outline: 1px solid black;
     }
 </style>
 <div id="console"></div>
 <div id="testArea">
     <div id="pusher">This box is here to create scrollbars.</div>
 </div>
 <script>
     var event;
+    var floatPrecision = 0.00001;
 
     function sendTouchStart(x, y)
     {
         if (window.eventSender) {
             eventSender.clearTouchPoints();
             eventSender.addTouchPoint(x, y);
             eventSender.touchStart();
         }
     }
 
@@ skipping 35 matching lines @@
     window.addEventListener("touchstart", base, false);
     
     sendTouchStart(100, 100);
     window.removeEventListener("touchstart", base, false);
     
     // Just zoomed.
     function justZoomed(e)
     {
         event = e;
         debug("\nJust zoomed");
-        shouldBe("event.touches[0].clientX", "83");
-        shouldBe("event.touches[0].clientY", "83");
-        shouldBe("event.touches[0].pageX", "83");
-        shouldBe("event.touches[0].pageY", "83");
+        shouldBeCloseTo("event.touches[0].clientX", 83.33333, floatPrecision);
+        shouldBeCloseTo("event.touches[0].clientY", 83.33333, floatPrecision);
+        shouldBeCloseTo("event.touches[0].pageX", 83.33333, floatPrecision);
+        shouldBeCloseTo("event.touches[0].pageY", 83.33333, floatPrecision);
     }
     window.addEventListener("touchstart", justZoomed, false);
     zoomPageIn();
     sendTouchStart(100, 100);
     zoomPageOut();
     window.removeEventListener("touchstart", justZoomed, false);
 
     // Just scrolled.
     function justScrolled(e)
     {
         event = e;
         debug("\nJust scrolled");
         shouldBe("event.touches[0].clientX", "100");
         shouldBe("event.touches[0].clientY", "100");
         shouldBe("event.touches[0].pageX", "150");
         shouldBe("event.touches[0].pageY", "150");
     }
     window.addEventListener("touchstart", justScrolled, false);
     scrollPage(50, 50);
     sendTouchStart(100, 100);
     scrollPage(0, 0);
     window.removeEventListener("touchstart", justScrolled, false);
 
     // Zoomed and scrolled.
     function zoomedAndScrolled(e)
     {
         event = e;
         debug("\nZoomed and scrolled");
-        shouldBe("event.touches[0].clientX", "84");
-        shouldBe("event.touches[0].clientY", "84");
-        shouldBe("event.touches[0].pageX", "133");
-        shouldBe("event.touches[0].pageY", "133");
+        shouldBeCloseTo("event.touches[0].clientX", 83.33333, floatPrecision);
+        shouldBeCloseTo("event.touches[0].clientY", 83.33333, floatPrecision);
+        shouldBeCloseTo("event.touches[0].pageX", 133.33333, floatPrecision);
+        shouldBeCloseTo("event.touches[0].pageY", 133.33333, floatPrecision);
     }
     window.addEventListener("touchstart", zoomedAndScrolled, false);
     zoomPageIn();
     scrollPage(50, 50);
     sendTouchStart(100, 100);
     zoomPageOut();
     scrollPage(0, 0);
     window.removeEventListener("touchstart", zoomedAndScrolled, false);
 
     if (window.eventSender) {
         eventSender.touchEnd();
         eventSender.clearTouchPoints();
     }
     
     if (window.testRunner) {
         var area = document.getElementById('testArea');
         area.parentNode.removeChild(area);
         isSuccessfullyParsed();
         testRunner.notifyDone();
     }
 </script>