Cleanup friends of LayoutObject

Source/core/paint/DeprecatedPaintLayerScrollableArea.cpp

Index: Source/core/paint/DeprecatedPaintLayerScrollableArea.cpp
diff --git a/Source/core/paint/DeprecatedPaintLayerScrollableArea.cpp b/Source/core/paint/DeprecatedPaintLayerScrollableArea.cpp
index 75b2999646e092109c931114f7a27add34ba4c50..b598873dac836f24880ac5b4825d236fb9a0d3a4 100644
--- a/Source/core/paint/DeprecatedPaintLayerScrollableArea.cpp
+++ b/Source/core/paint/DeprecatedPaintLayerScrollableArea.cpp
@@ -413,7 +413,7 @@ void DeprecatedPaintLayerScrollableArea::setScrollOffset(const DoublePoint& newS
     // The caret rect needs to be invalidated after scrolling
     frame->selection().setCaretRectNeedsUpdate();
 
-    FloatQuad quadForFakeMouseMoveEvent = FloatQuad(layer()->layoutObject()->previousPaintInvalidationRect());
+    FloatQuad quadForFakeMouseMoveEvent = FloatQuad(layer()->layoutObject()->previousPaintInvalidationRectIncludingCompositedScrolling(*paintInvalidationContainer));

[esprehn, 2015/08/21 21:20:32]

Is this the bug fix? Can we fix it in a separate patch?

 
     quadForFakeMouseMoveEvent = paintInvalidationContainer->localToAbsoluteQuad(quadForFakeMouseMoveEvent);
     frame->eventHandler().dispatchFakeMouseMoveEventSoonInQuad(quadForFakeMouseMoveEvent);
@@ -1116,7 +1116,7 @@ void DeprecatedPaintLayerScrollableArea::updateScrollCornerStyle()
     if (corner) {
         if (!m_scrollCorner) {
             m_scrollCorner = LayoutScrollbarPart::createAnonymous(&box().document());
-            m_scrollCorner->setParent(&box());
+            LayoutObject::DangerousLayoutTreeMutator(*m_scrollCorner).setParent(&box());
         }
         m_scrollCorner->setStyle(corner.release());
     } else if (m_scrollCorner) {
@@ -1244,7 +1244,7 @@ void DeprecatedPaintLayerScrollableArea::updateResizerStyle()
     if (resizer) {
         if (!m_resizer) {
             m_resizer = LayoutScrollbarPart::createAnonymous(&box().document());
-            m_resizer->setParent(&box());
+            LayoutObject::DangerousLayoutTreeMutator(*m_resizer).setParent(&box());
         }
         m_resizer->setStyle(resizer.release());
     } else if (m_resizer) {