Oilpan: Change Persistent<> data members to Member<> in HitTestResult.

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index 3d79b863bc48bd2793a1a4d137b3be880ff1a7a5..92175fd6a8a5a120555b88b7b169f7b5fecd4e28 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -3220,6 +3220,11 @@ void WebViewImpl::performPluginAction(const WebPluginAction& action,
 
 WebHitTestResult WebViewImpl::hitTestResultAt(const WebPoint& point)
 {
+    return coreHitTestResultAt(point);
+}
+
+HitTestResult WebViewImpl::coreHitTestResultAt(const WebPoint& point)
+{
     IntPoint scaledPoint = point;
     scaledPoint.scale(1 / pageScaleFactor(), 1 / pageScaleFactor());
     return hitTestResultForWindowPos(scaledPoint);