Revert of [Editing] Introduce |EditCommandComposition::willUn/Reapply()| in prepare for (2/3)

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

Index: third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.h
diff --git a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.h b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.h
index 39ffedf1bb80c08f6a62ab4ebd3e10edd2c36d17..54ca077d5db6597c4bd1d754a03742399a707923 100644
--- a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.h
+++ b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.h
@@ -52,8 +52,8 @@
                                         InputEvent::InputType);
 
   bool belongsTo(const LocalFrame&) const override;
-  void unapply(EditCommandSource) override;
-  void reapply(EditCommandSource) override;
+  void unapply() override;
+  void reapply() override;
   InputEvent::InputType inputType() const override;
   void append(SimpleEditCommand*);
   void append(EditCommandComposition*);
@@ -78,14 +78,6 @@
                          const VisibleSelection& startingSelection,
                          const VisibleSelection& endingSelection,
                          InputEvent::InputType);
-
-  // TODO(chongz): Implement "beforeinput" as described below:
-  // Fires "beforeinput" and will returns |false| to cancel unapply / reapply if
-  //   * "beforeinput" was canceled, or
-  //   * |frame| was destroyed by event handlers.
-  // Note: Undo stack will always get popped.
-  bool willUnapply(EditCommandSource);
-  bool willReapply(EditCommandSource);
 
   Member<Document> m_document;
   VisibleSelection m_startingSelection;