Remove include only fwl.h and IWYU.

xfa/include/fwl/core/fwl_grid.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_CORE_FWL_GRID_H_
 #define XFA_INCLUDE_FWL_CORE_FWL_GRID_H_
 
+#include "xfa/include/fwl/core/fwl_content.h"
+
 class IFWL_Widget;
-class IFWL_Content;
+
 #define FWL_CLASS_Grid L"FWL_GRID"
 #define FWL_CLASSHASH_Grid 3150298670
 #define FWL_GRIDSTYLEEXT_ShowGridLines (1L << 0)
+
 struct FWL_LAYOUTDATA {
   FX_FLOAT fWidth;
   FX_FLOAT fHeight;
 };
 enum FWL_GRIDUNIT {
   FWL_GRIDUNIT_Auto = 0,
   FWL_GRIDUNIT_Fixed,
   FWL_GRIDUNIT_Scaled,
   FWL_GRIDUNIT_Infinity,
 };
 enum FWL_GRIDMARGIN {
   FWL_GRIDMARGIN_Left = 0,
   FWL_GRIDMARGIN_Top,
   FWL_GRIDMARGIN_Right,
   FWL_GRIDMARGIN_Bottom,
 };
 enum FWL_GRIDSIZE {
   FWL_GRIDSIZE_Width = 0,
   FWL_GRIDSIZE_Height,
   FWL_GRIDSIZE_MinWidth,
   FWL_GRIDSIZE_MinHeight,
   FWL_GRIDSIZE_MaxWidth,
   FWL_GRIDSIZE_MaxHeight,
 };
+
 typedef struct FWL_HGRIDCOLROW_ { void* pData; } * FWL_HGRIDCOLROW;
 class IFWL_Grid : public IFWL_Content {
  public:
   static IFWL_Grid* Create(const CFWL_WidgetImpProperties& properties);
 
   FWL_HGRIDCOLROW InsertColRow(FX_BOOL bColumn, int32_t nIndex = -1);
   int32_t CountColRows(FX_BOOL bColumn);
   FWL_HGRIDCOLROW GetColRow(FX_BOOL bColumn, int32_t nIndex);
   int32_t GetIndex(FWL_HGRIDCOLROW hColRow);
   FX_FLOAT GetSize(FWL_HGRIDCOLROW hColRow, FWL_GRIDUNIT& eUnit);
@@ skipping 27 matching lines @@
                           FX_FLOAT fMargin);
   FWL_ERR RemoveWidgetMargin(IFWL_Widget* pWidget, FWL_GRIDMARGIN eMargin);
   FX_FLOAT GetGridSize(FWL_GRIDSIZE eSize, FWL_GRIDUNIT& eUnit);
   FWL_ERR SetGridSize(FWL_GRIDSIZE eSize, FX_FLOAT fSize, FWL_GRIDUNIT eUit);
 
  protected:
   IFWL_Grid();
 };
 
 #endif  // XFA_INCLUDE_FWL_CORE_FWL_GRID_H_