Centralize TextStream functions to remove RenderTreeAsText dependency of the filters

Source/core/platform/graphics/filters/SourceGraphic.cpp

 /*
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2013 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
  * 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "config.h"
 
 #include "core/platform/graphics/filters/SourceGraphic.h"
 
 #include "core/platform/graphics/GraphicsContext.h"
 #include "core/platform/graphics/filters/Filter.h"
-#include "core/rendering/RenderTreeAsText.h"
 #include "platform/text/TextStream.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 PassRefPtr<SourceGraphic> SourceGraphic::create(Filter* filter)
 {
     return adoptRef(new SourceGraphic(filter));
 }
@@ skipping 23 matching lines @@
 }
 
 TextStream& SourceGraphic::externalRepresentation(TextStream& ts, int indent) const
 {
     writeIndent(ts, indent);
     ts << "[SourceGraphic]\n";
     return ts;
 }
 
 } // namespace WebCore