Set caret width based on device scale factor

third_party/WebKit/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
@@ skipping 66 matching lines @@
 
 enum HitTestFilter { HitTestAll, HitTestSelf, HitTestDescendants };
 
 enum MarkingBehavior {
   MarkOnlyThis,
   MarkContainerChain,
 };
 
 enum ScheduleRelayoutBehavior { ScheduleRelayout, DontScheduleRelayout };
 
-const LayoutUnit& caretWidth();
-
 struct AnnotatedRegionValue {
   DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
   bool operator==(const AnnotatedRegionValue& o) const {
     return draggable == o.draggable && bounds == o.bounds;
   }
 
   LayoutRect bounds;
   bool draggable;
 };
 
@@ skipping 2671 matching lines @@
 CORE_EXPORT void showLineTree(const blink::LayoutObject*);
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1);
 // We don't make object2 an optional parameter so that showLayoutTree
 // can be called from gdb easily.
 CORE_EXPORT void showLayoutTree(const blink::LayoutObject* object1,
                                 const blink::LayoutObject* object2);
 
 #endif
 
 #endif  // LayoutObject_h