Remove include only fwl.h and IWYU.

xfa/include/fwl/basewidget/fwl_monthcalendar.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_INCLUDE_FWL_BASEWIDGET_FWL_MONTHCALENDAR_H_
 #define XFA_INCLUDE_FWL_BASEWIDGET_FWL_MONTHCALENDAR_H_
 
-class IFWL_MonthCalendarDP;
-class IFWL_MonthCalendar;
+#include "xfa/include/fwl/core/fwl_note.h"
+#include "xfa/include/fwl/core/fwl_widget.h"
+
 #define FWL_CLASS_MonthCalendar L"FWL_MONTHCALENDAR"
 #define FWL_CLASSHASH_MonthCalendar 2733931374
 #define FWL_STYLEEXT_MCD_MultiSelect (1L << 0)
 #define FWL_STYLEEXT_MCD_NoToday (1L << 1)
 #define FWL_STYLEEXT_MCD_NoTodayCircle (1L << 2)
 #define FWL_STYLEEXT_MCD_WeekNumbers (1L << 3)
 #define FWL_WGTCAPACITY_MC_HEADER_WIDTH 12
 #define FWL_WGTCAPACITY_MC_HEADER_Height 13
 #define FWL_WGTCAPACITY_MC_HEADER_BTN_WIDTH 14
 #define FWL_WGTCAPACITY_MC_HEADER_BTN_HEIGHT 15
@@ skipping 68 matching lines @@
 #define FWL_MCCAPACITY_August FWL_WGTCAPACITY_MAX + 19
 #define FWL_MCCAPACITY_September FWL_WGTCAPACITY_MAX + 20
 #define FWL_MCCAPACITY_October FWL_WGTCAPACITY_MAX + 21
 #define FWL_MCCAPACITY_November FWL_WGTCAPACITY_MAX + 22
 #define FWL_MCCAPACITY_December FWL_WGTCAPACITY_MAX + 23
 #define FWL_MCCAPACITY_Today FWL_WGTCAPACITY_MAX + 24
 #define FWL_EVENT_MCD_DATESELECTED L"FWL_EVENT_MCD_DateSelected"
 #define FWL_EVT_MCD_DateChanged L"FWL_EVENT_MCD_DateChanged"
 #define FWL_NOTEHASH_MCD_DATASELECTED 1085596932
 #define FWL_EVTHASH_MCD_DateChanged 54212227
+
 BEGIN_FWL_EVENT_DEF(CFWL_Event_McdDateSelected, FWL_NOTEHASH_MCD_DATASELECTED)
 int32_t m_iStartDay;
 int32_t m_iEndDay;
 END_FWL_EVENT_DEF
+
 BEGIN_FWL_EVENT_DEF(CFWL_EventMcdDateChanged, FWL_EVTHASH_MCD_DateChanged)
 int32_t m_iOldYear;
 int32_t m_iOldMonth;
 int32_t m_iStartDay;
 int32_t m_iEndDay;
 END_FWL_EVENT_DEF
+
 class IFWL_MonthCalendarDP : public IFWL_DataProvider {
  public:
   virtual int32_t GetCurDay(IFWL_Widget* pWidget) = 0;
   virtual int32_t GetCurMonth(IFWL_Widget* pWidget) = 0;
   virtual int32_t GetCurYear(IFWL_Widget* pWidget) = 0;
 };
+
 class IFWL_MonthCalendar : public IFWL_Widget {
  public:
   static IFWL_MonthCalendar* Create(const CFWL_WidgetImpProperties& properties,
                                     IFWL_Widget* pOuter);
 
   int32_t CountSelect();
   FX_BOOL GetSelect(int32_t& iYear,
                     int32_t& iMonth,
                     int32_t& iDay,
                     int32_t nIndex = 0);
   FX_BOOL SetSelect(int32_t iYear, int32_t iMonth, int32_t iDay);
 
  protected:
   IFWL_MonthCalendar();
 };
 
 #endif  // XFA_INCLUDE_FWL_BASEWIDGET_FWL_MONTHCALENDAR_H_