Clean up forward declarations in Source/core/html

Source/core/html/forms/InputType.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 24 matching lines @@
 
 #include "core/html/HTMLTextFormControlElement.h"
 #include "core/html/forms/ColorChooserClient.h"
 #include "core/html/forms/InputTypeView.h"
 #include "core/html/forms/StepRange.h"
 #include "core/frame/UseCounter.h"
 
 namespace blink {
 
 class Chrome;
-class DateComponents;
 class DragData;
 class ExceptionState;
 class FileList;
 class FormDataList;
-class HTMLElement;
-class Node;
 
 // An InputType object represents the type-specific part of an HTMLInputElement.
 // Do not expose instances of InputType and classes derived from it to classes
 // other than HTMLInputElement.
 // FIXME: InputType should not inherit InputTypeView. It's conceptually wrong.
 class InputType : public InputTypeView {
     WTF_MAKE_NONCOPYABLE(InputType);
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
 
 public:
@@ skipping 162 matching lines @@
 
     StepRange createStepRange(AnyStepHandling, const Decimal& stepBaseDefault, const Decimal& minimumDefault, const Decimal& maximumDefault, const StepRange::StepDescription&) const;
 
 private:
     // Helper for stepUp()/stepDown(). Adds step value * count to the current value.
     void applyStep(const Decimal&, int count, AnyStepHandling, TextFieldEventBehavior, ExceptionState&);
 };
 
 } // namespace blink
 #endif