Fix LayoutBox::topLeftLocation for table rows and table cells

third_party/WebKit/Source/core/layout/LayoutBox.h

Index: third_party/WebKit/Source/core/layout/LayoutBox.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.h b/third_party/WebKit/Source/core/layout/LayoutBox.h
index 429c6d18f9a64215142f5846863132196f6f63d3..eec2891efc9e3a2cba7012371b93c07dfbb279de 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.h
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.h
@@ -326,6 +326,10 @@ class CORE_EXPORT LayoutBox : public LayoutBoxModelObject {
     frameRectChanged();
   }
 
+  // The ancestor box that this object's location and topLeftLocation are
+  // relative to.
+  virtual LayoutBox* locationContainer() const;
+
   // FIXME: Currently scrollbars are using int geometry and positioned based on
   // pixelSnappedBorderBoxRect whose size may change when location changes because of
   // pixel snapping. This function is used to change location of the LayoutBox outside