Merge the CFWL_*Imp classes into the IFWL_* classes.

xfa/fwl/core/ifwl_comboedit.h

Index: xfa/fwl/core/ifwl_comboedit.h
diff --git a/xfa/fwl/core/ifwl_comboedit.h b/xfa/fwl/core/ifwl_comboedit.h
new file mode 100644
index 0000000000000000000000000000000000000000..22c3f01e41404077e18c76a49a90a3e625b6878f
--- /dev/null
+++ b/xfa/fwl/core/ifwl_comboedit.h
@@ -0,0 +1,44 @@
+// Copyright 2016 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_FWL_CORE_IFWL_COMBOEDIT_H_
+#define XFA_FWL_CORE_IFWL_COMBOEDIT_H_
+
+#include "xfa/fwl/core/cfwl_widgetimpproperties.h"
+#include "xfa/fwl/core/ifwl_edit.h"
+#include "xfa/fwl/core/ifwl_widget.h"
+
+class IFWL_ComboBox;
+
+class IFWL_ComboEdit : public IFWL_Edit {
+ public:
+  static IFWL_ComboEdit* Create(const CFWL_WidgetImpProperties& properties,
+                                IFWL_Widget* pOuter);
+
+  IFWL_ComboEdit(const CFWL_WidgetImpProperties& properties,
+                 IFWL_Widget* pOuter);
+
+  void ClearSelected();
+  void SetSelected();
+  void EndCaret();
+  void FlagFocus(FX_BOOL bSet);
+
+ protected:
+  void SetComboBoxFocus(FX_BOOL bSet);
+  IFWL_ComboBox* m_pOuter;
+  friend class CFWL_ComboEditImpDelegate;
+};
+
+class CFWL_ComboEditImpDelegate : public CFWL_EditImpDelegate {
+ public:
+  CFWL_ComboEditImpDelegate(IFWL_ComboEdit* pOwner);
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+
+ protected:
+  IFWL_ComboEdit* m_pOwner;
+};
+
+#endif  // XFA_FWL_CORE_IFWL_COMBOEDIT_H_