Remove include only fwl.h and IWYU.

xfa/src/fwl/src/theme/formtp.cpp

Index: xfa/src/fwl/src/theme/formtp.cpp
diff --git a/xfa/src/fwl/src/theme/formtp.cpp b/xfa/src/fwl/src/theme/formtp.cpp
index f70b4a1a2a8e75b4ed95108dea6b5412362b187d..c8f032d80ea12eaa65d9741d477a1f3e56d6cdf4 100644
--- a/xfa/src/fwl/src/theme/formtp.cpp
+++ b/xfa/src/fwl/src/theme/formtp.cpp
@@ -4,7 +4,12 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
+#include "xfa/include/fwl/theme/formtp.h"
+
+#include "xfa/include/fwl/core/fwl_form.h"
+#include "xfa/include/fwl/core/fwl_widget.h"
 #include "xfa/src/foxitlib.h"
+
 #define FWLTHEME_CAPACITY_CXFormBorder 3
 #define FWLTHEME_CAPACITY_CYFormBorder 3
 #define FWLTHEME_CAPACITY_CYNarrowCaption 18
@@ -15,6 +20,7 @@
 #define FWLTHEME_FORMBTN_Margin 5
 #define FWLTHEME_FORMBTN_Span 2
 #define FWLTHEME_FORMBTN_Size 21
+
 CFWL_FormTP::CFWL_FormTP() : m_pActiveBitmap(NULL), m_pDeactivebitmap(NULL) {
   m_pThemeData = new SBThemeData;
   SetThemeData(0);