Add support for multiple text decorations with same line positioning

Source/core/layout/LayoutObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 895 matching lines @@
     {
         return style()->visitedDependentColor(colorProperty);
     }
 
     // Used only by Element::pseudoStyleCacheIsInvalid to get a first line style based off of a
     // given new style, without accessing the cache.
     PassRefPtr<ComputedStyle> uncachedFirstLineStyle(ComputedStyle*) const;
 
     virtual CursorDirective getCursor(const LayoutPoint&, Cursor&) const;
 
-    struct AppliedTextDecoration {
-        STACK_ALLOCATED();
-        Color color;
-        TextDecorationStyle style;
-        AppliedTextDecoration() : color(Color::transparent), style(TextDecorationStyleSolid) { }
-    };
-
-    void getTextDecorations(unsigned decorations, AppliedTextDecoration& underline, AppliedTextDecoration& overline, AppliedTextDecoration& linethrough, bool quirksMode = false, bool firstlineStyle = false);
-
     // Return the LayoutBoxModelObject in the container chain which is responsible for painting this object, or layout view
     // if painting is root-relative. This is the container that should be passed to the 'forPaintInvalidation'
     // methods.
     const LayoutBoxModelObject& containerForPaintInvalidationOnRootedTree() const;
 
     // This method will be deprecated in a long term, replaced by containerForPaintInvalidationOnRootedTree.
     const LayoutBoxModelObject* containerForPaintInvalidation() const;
 
     const LayoutBoxModelObject* adjustCompositedContainerForSpecialAncestors(const LayoutBoxModelObject* paintInvalidationContainer) const;
     bool isPaintInvalidationContainer() const;
@@ skipping 938 matching lines @@
 void showTree(const blink::LayoutObject*);
 void showLineTree(const blink::LayoutObject*);
 void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObject* object2);
 
 #endif
 
 #endif // LayoutObject_h