Remove IXFA_* interfaces.

xfa/fxfa/app/xfa_fwltheme.cpp

 // 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
 
 #include "xfa/fxfa/app/xfa_fwltheme.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fgas/crt/fgas_codepage.h"
 #include "xfa/fwl/basewidget/ifwl_barcode.h"
 #include "xfa/fwl/basewidget/ifwl_caret.h"
 #include "xfa/fwl/basewidget/ifwl_checkbox.h"
 #include "xfa/fwl/basewidget/ifwl_combobox.h"
 #include "xfa/fwl/basewidget/ifwl_datetimepicker.h"
 #include "xfa/fwl/basewidget/ifwl_edit.h"
 #include "xfa/fwl/basewidget/ifwl_listbox.h"
 #include "xfa/fwl/basewidget/ifwl_monthcalendar.h"
 #include "xfa/fwl/basewidget/ifwl_picturebox.h"
 #include "xfa/fwl/basewidget/ifwl_pushbutton.h"
 #include "xfa/fwl/basewidget/ifwl_scrollbar.h"
 #include "xfa/fwl/core/cfwl_themebackground.h"
 #include "xfa/fwl/core/cfwl_themetext.h"
-#include "xfa/fxfa/app/xfa_ffapp.h"
 #include "xfa/fxfa/app/xfa_ffwidget.h"
 #include "xfa/fxgraphics/cfx_color.h"
+#include "xfa/include/fxfa/xfa_ffapp.h"
 
 namespace {
 
 const FX_WCHAR* const g_FWLTheme_CalFonts[] = {
     L"Arial", L"Courier New", L"DejaVu Sans",
 };
 
 }  // namespace
 
 CXFA_FFWidget* XFA_ThemeGetOuterWidget(IFWL_Widget* pWidget) {
@@ skipping 386 matching lines @@
       }
     }
     CFX_Color crLine(cr);
     pParams->m_pGraphics->SetStrokeColor(&crLine);
     pParams->m_pGraphics->SetLineWidth(fWidth);
     pParams->m_pGraphics->StrokePath(pParams->m_pPath, &pParams->m_matrix);
     return TRUE;
   }
   return CFWL_EditTP::DrawBackground(pParams);
 }