Apply offset from the correct graphics layer; simplify code for link highlights.

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

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 74 matching lines @@
   virtual void flowThreadDescendantStyleWillChange(
       LayoutBox*,
       StyleDifference,
       const ComputedStyle& newStyle) {}
   virtual void flowThreadDescendantStyleDidChange(
       LayoutBox*,
       StyleDifference,
       const ComputedStyle& oldStyle) {}
 
   void absoluteQuadsForDescendant(const LayoutBox& descendant,
-                                  Vector<FloatQuad>&);
+                                  Vector<FloatQuad>&,
+                                  MapCoordinatesFlags mode = 0);
 
   bool nodeAtPoint(HitTestResult&,
                    const HitTestLocation& locationInContainer,
                    const LayoutPoint& accumulatedOffset,
                    HitTestAction) final;
 
   virtual void addColumnSetToThread(LayoutMultiColumnSet*) = 0;
   virtual void removeColumnSetFromThread(LayoutMultiColumnSet*);
 
   void computeLogicalHeight(LayoutUnit logicalHeight,
@@ skipping 97 matching lines @@
 struct ValueToString<LayoutMultiColumnSet*> {
   static String toString(const LayoutMultiColumnSet* value) {
     return String::format("%p", value);
   }
 };
 #endif
 
 }  // namespace blink
 
 #endif  // LayoutFlowThread_h