Remove touch scroll chaining from main thread scrolling.

LayoutTests/fast/events/touch/gesture/touch-gesture-scroll-div-past-extent-not-propagated.html

Index: LayoutTests/fast/events/touch/gesture/touch-gesture-scroll-div-past-extent-not-propagated.html
diff --git a/LayoutTests/fast/events/touch/gesture/touch-gesture-scroll-div-propagated.html b/LayoutTests/fast/events/touch/gesture/touch-gesture-scroll-div-past-extent-not-propagated.html
similarity index 96%
rename from LayoutTests/fast/events/touch/gesture/touch-gesture-scroll-div-propagated.html
rename to LayoutTests/fast/events/touch/gesture/touch-gesture-scroll-div-past-extent-not-propagated.html
index a79d6de57bd7a5c272dae9e597ef38891a35a217..7d1be9b067832b0e000c5ff730af20fb13c13468 100644
--- a/LayoutTests/fast/events/touch/gesture/touch-gesture-scroll-div-propagated.html
+++ b/LayoutTests/fast/events/touch/gesture/touch-gesture-scroll-div-past-extent-not-propagated.html
@@ -83,7 +83,7 @@ var touchtarget;
 var expectedGesturesTotal = 2;
 var gesturesOccurred = 0;
 var scrollAmountX = ['0', '0'];
-var scrollAmountY = ['0', '10'];
+var scrollAmountY = ['0', '0'];
 var wheelEventsOccurred = 0;
 var expectedWheelEventsOccurred = ['0', '0'];
 var scrollEventsOccurred = 0;
@@ -125,7 +125,7 @@ function runTest()
     touchtarget.addEventListener("mousewheel", recordWheel);
 
     if (window.eventSender) {
-        description('This tests that a gesture scroll is propagated from an ' +
+        description('This tests that a gesture scroll isn\'t propagated from an ' +
                 'inner div to an outer div when the inner div has no ' +
                 'remaining scroll offset.');
         if (checkTestDependencies())