Added pinch viewport offset to history item.

Source/core/loader/HistoryItem.cpp

Index: Source/core/loader/HistoryItem.cpp
diff --git a/Source/core/loader/HistoryItem.cpp b/Source/core/loader/HistoryItem.cpp
index 179f361344d7286ab80f115d8c57ff448713ac46..29ac153f851c68f0ac8cd74a56a717e52df044f6 100644
--- a/Source/core/loader/HistoryItem.cpp
+++ b/Source/core/loader/HistoryItem.cpp
@@ -104,6 +104,16 @@ void HistoryItem::setTarget(const String& target)
     m_target = target;
 }
 
+const FloatPoint& HistoryItem::pinchViewportScrollPoint() const
+{
+    return m_pinchViewportScrollPoint;
+}
+
+void HistoryItem::setPinchViewportScrollPoint(const FloatPoint& point)
+{
+    m_pinchViewportScrollPoint = point;
+}
+
 const IntPoint& HistoryItem::scrollPoint() const
 {
     return m_scrollPoint;
@@ -118,6 +128,8 @@ void HistoryItem::clearScrollPoint()
 {
     m_scrollPoint.setX(0);

[eseidel, 2014/05/08 18:58:02]

m_scrollPoint = IntPoint();
m_pinchViewportScrollPoint = IntPoint();

[bokan, 2014/05/08 19:27:47]

Done. (Though the latter is a FloatPoint)

     m_scrollPoint.setY(0);
+    m_pinchViewportScrollPoint.setX(0);
+    m_pinchViewportScrollPoint.setY(0);
 }
 
 float HistoryItem::pageScaleFactor() const