[Editing] Store |CommandSource| in |CompositeEditCommand|

third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.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 24 matching lines @@
 
 namespace blink {
 
 class EditingStyle;
 class Element;
 class HTMLBRElement;
 class HTMLElement;
 class HTMLSpanElement;
 class Text;
 
+enum class CommandSource { MenuOrKeyBinding, Dom };
+
 class EditCommandComposition final : public UndoStep {
  public:
   static EditCommandComposition* create(Document*,
                                         const VisibleSelection&,
                                         const VisibleSelection&,
                                         InputEvent::InputType);
 
   bool belongsTo(const LocalFrame&) const override;
   void unapply() override;
   void reapply() override;
@@ skipping 52 matching lines @@
   virtual bool isTypingCommand() const;
   virtual bool isCommandGroupWrapper() const;
   virtual bool isDragAndDropCommand() const;
   virtual bool preservesTypingStyle() const;
   virtual void setShouldRetainAutocorrectionIndicator(bool);
   virtual bool shouldStopCaretBlinking() const { return false; }
 
   DECLARE_VIRTUAL_TRACE();
 
  protected:
-  explicit CompositeEditCommand(Document&);
+  CompositeEditCommand(Document&, CommandSource);
 
   //
   // sugary-sweet convenience functions to help create and apply edit commands
   // in composite commands
   //
   void appendNode(Node*, ContainerNode* parent, EditingState*);
   void applyCommandToComposite(EditCommand*, EditingState*);
   void applyCommandToComposite(CompositeEditCommand*,
                                const VisibleSelection&,
                                EditingState*);
@@ skipping 125 matching lines @@
                             VisiblePosition destination = VisiblePosition());
 
   bool breakOutOfEmptyListItem(EditingState*);
   bool breakOutOfEmptyMailBlockquotedParagraph(EditingState*);
 
   Position positionAvoidingSpecialElementBoundary(const Position&,
                                                   EditingState*);
 
   Node* splitTreeToNode(Node*, Node*, bool splitAncestor = false);
 
+  CommandSource commandSource() const;
+
   HeapVector<Member<EditCommand>> m_commands;
 
  private:
   bool isCompositeEditCommand() const final { return true; }
 
   Member<EditCommandComposition> m_composition;
+  CommandSource m_source;
 };
 
 DEFINE_TYPE_CASTS(CompositeEditCommand,
                   EditCommand,
                   command,
                   command->isCompositeEditCommand(),
                   command.isCompositeEditCommand());
 
 }  // namespace blink
 
 #endif  // CompositeEditCommand_h