blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/layout/svg/SVGTextLayoutEngineBaseline.h

 /*
  * Copyright (C) Research In Motion Limited 2010. 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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 11 matching lines @@
 
 #include "core/layout/api/LineLayoutItem.h"
 #include "core/style/SVGComputedStyleDefs.h"
 #include "wtf/Allocator.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/text/Unicode.h"
 
 namespace blink {
 
 class Font;
-class LayoutObject;
 class ComputedStyle;
 class SVGComputedStyle;
-class SVGTextMetrics;
 
 // Helper class used by SVGTextLayoutEngine to handle 'alignment-baseline' /
 // 'dominant-baseline' and 'baseline-shift'.
 class SVGTextLayoutEngineBaseline {
   STACK_ALLOCATED();
   WTF_MAKE_NONCOPYABLE(SVGTextLayoutEngineBaseline);
 
  public:
   SVGTextLayoutEngineBaseline(const Font&, float effectiveZoom);
 
@@ skipping 10 matching lines @@
   // Everything we read from the m_font's font descriptor during layout is
   // scaled by the effective zoom, as fonts always are in computed style. Since
   // layout inside SVG takes place in unzoomed coordinates we have to compensate
   // for zoom when reading values from the font descriptor.
   float m_effectiveZoom;
 };
 
 }  // namespace blink
 
 #endif