DocumentMarkerList refactor as an interface

third_party/WebKit/Source/core/editing/commands/SplitTextNodeCommand.h

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #ifndef SplitTextNodeCommand_h
 #define SplitTextNodeCommand_h
 
 #include "core/editing/commands/EditCommand.h"
 
 namespace blink {
 
 class Text;
 
-class SplitTextNodeCommand final : public SimpleEditCommand {
+class CORE_EXPORT SplitTextNodeCommand final : public SimpleEditCommand {
  public:
   static SplitTextNodeCommand* Create(Text* node, int offset) {
     return new SplitTextNodeCommand(node, offset);
   }
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   SplitTextNodeCommand(Text*, int offset);
 
   void DoApply(EditingState*) override;
   void DoUnapply() override;
   void DoReapply() override;
   void InsertText1AndTrimText2();
 
   Member<Text> text1_;
   Member<Text> text2_;
   unsigned offset_;
 };
 
 }  // namespace blink
 
 #endif  // SplitTextNodeCommand_h