Componentization: make symbols visible.

Source/core/svg/SVGAElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  *
  * 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.
  */
 
 #ifndef SVGAElement_h
 #define SVGAElement_h
 
+#include "core/CoreExport.h"
 #include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGGraphicsElement.h"
 #include "core/svg/SVGURIReference.h"
 
 namespace blink {
 
-class SVGAElement final : public SVGGraphicsElement,
+class CORE_EXPORT SVGAElement final : public SVGGraphicsElement,
                           public SVGURIReference {
     DEFINE_WRAPPERTYPEINFO();
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SVGAElement);
 public:
     DECLARE_NODE_FACTORY(SVGAElement);
     SVGAnimatedString* svgTarget() { return m_svgTarget.get(); }
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
@@ skipping 21 matching lines @@
 
     virtual bool willRespondToMouseClickEvents() override;
 
     RefPtrWillBeMember<SVGAnimatedString> m_svgTarget;
     bool m_wasFocusedByMouse;
 };
 
 } // namespace blink
 
 #endif // SVGAElement_h