Refactor HitTestResult to store the HitTestRequest

Source/core/layout/LayoutFlowThread.cpp

Index: Source/core/layout/LayoutFlowThread.cpp
diff --git a/Source/core/layout/LayoutFlowThread.cpp b/Source/core/layout/LayoutFlowThread.cpp
index 0e29c6bfce41ba1a3d22b70922e740d34dbe7d2e..2d2b6455ea32b5b8eb42768929f620e72b550360 100644
--- a/Source/core/layout/LayoutFlowThread.cpp
+++ b/Source/core/layout/LayoutFlowThread.cpp
@@ -123,11 +123,11 @@ void LayoutFlowThread::computeLogicalHeight(LayoutUnit, LayoutUnit logicalTop, L
     }
 }
 
-bool LayoutFlowThread::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
+bool LayoutFlowThread::nodeAtPoint(HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
 {
     if (hitTestAction == HitTestBlockBackground)
         return false;
-    return LayoutBlockFlow::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, hitTestAction);
+    return LayoutBlockFlow::nodeAtPoint(result, locationInContainer, accumulatedOffset, hitTestAction);
 }
 
 LayoutUnit LayoutFlowThread::pageLogicalHeightForOffset(LayoutUnit offset)