Don't adjust scroll for selection if it's already empty.

third_party/WebKit/Source/core/paint/ObjectPaintInvalidator.cpp

Index: third_party/WebKit/Source/core/paint/ObjectPaintInvalidator.cpp
diff --git a/third_party/WebKit/Source/core/paint/ObjectPaintInvalidator.cpp b/third_party/WebKit/Source/core/paint/ObjectPaintInvalidator.cpp
index 22d4541294d1648509d3c725720542e19a42549e..eeb48ba73fd87a5e111b4e328fbe7850094067f7 100644
--- a/third_party/WebKit/Source/core/paint/ObjectPaintInvalidator.cpp
+++ b/third_party/WebKit/Source/core/paint/ObjectPaintInvalidator.cpp
@@ -419,10 +419,10 @@ void ObjectPaintInvalidatorWithContext::invalidateSelectionIfNeeded(PaintInvalid
 
     LayoutRect oldSelectionRect = selectionPaintInvalidationMap().get(&m_object);
     LayoutRect newSelectionRect = m_object.localSelectionRect();
-    if (!newSelectionRect.isEmpty())
+    if (!newSelectionRect.isEmpty()) {
         m_context.mapLocalRectToPaintInvalidationBacking(m_object, newSelectionRect);
-
-    newSelectionRect.move(m_object.scrollAdjustmentForPaintInvalidation(*m_context.paintInvalidationContainer));
+        newSelectionRect.move(m_object.scrollAdjustmentForPaintInvalidation(*m_context.paintInvalidationContainer));
+    }
 
     setPreviousSelectionPaintInvalidationRect(m_object, newSelectionRect);