Remove include only fwl.h and IWYU.

xfa/src/fwl/src/core/fwl_sdadapterimp.cpp

Index: xfa/src/fwl/src/core/fwl_sdadapterimp.cpp
diff --git a/xfa/src/fwl/src/core/fwl_sdadapterimp.cpp b/xfa/src/fwl/src/core/fwl_sdadapterimp.cpp
index 9a1d07b46489aa26d1397c8c9fb3e39b53133c56..999f5a6cdf1e25e914fd6e5e0af522c8730f924c 100644
--- a/xfa/src/fwl/src/core/fwl_sdadapterimp.cpp
+++ b/xfa/src/fwl/src/core/fwl_sdadapterimp.cpp
@@ -4,13 +4,20 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
+#include "core/include/fxcrt/fx_system.h"
+#include "xfa/include/fwl/adapter/fwl_adapterthreadmgr.h"
+#include "xfa/include/fwl/adapter/fwl_adapterwidgetmgr.h"
+#include "xfa/include/fwl/adapter/fwl_sdadapterimp.h"
+#include "xfa/include/fwl/core/fwl_app.h"
 #include "xfa/src/foxitlib.h"
 #include "xfa/src/fwl/src/core/include/fwl_noteimp.h"
 #include "xfa/src/fwl/src/core/include/fwl_targetimp.h"
 #include "xfa/src/fwl/src/core/include/fwl_threadimp.h"
 #include "xfa/src/fwl/src/core/include/fwl_widgetmgrimp.h"
+
 CFWL_SDAdapterWidgetMgr::CFWL_SDAdapterWidgetMgr() {}
 CFWL_SDAdapterWidgetMgr::~CFWL_SDAdapterWidgetMgr() {}
+
 FWL_ERR CFWL_SDAdapterWidgetMgr::CreateWidget(IFWL_Widget* pWidget,
                                               IFWL_Widget* pParent) {
   return FWL_ERR_Succeeded;