Merge delegates into IFWL_* classes.

xfa/fwl/core/ifwl_comboboxproxy.h

Index: xfa/fwl/core/ifwl_comboboxproxy.h
diff --git a/xfa/fwl/core/ifwl_comboboxproxy.h b/xfa/fwl/core/ifwl_comboboxproxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..1cf7a06ccb1e7c6222beebfd3cabe12b41302f61
--- /dev/null
+++ b/xfa/fwl/core/ifwl_comboboxproxy.h
@@ -0,0 +1,41 @@
+// 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_COMBOBOXPROXY_H_
+#define XFA_FWL_CORE_IFWL_COMBOBOXPROXY_H_
+
+#include "xfa/fwl/core/ifwl_formproxy.h"
+
+class IFWL_ComboBox;
+
+class IFWL_ComboBoxProxy : public IFWL_FormProxy {
+ public:
+  IFWL_ComboBoxProxy(IFWL_ComboBox* pCombobBox,
+                     const IFWL_App* app,
+                     const CFWL_WidgetImpProperties& properties,
+                     IFWL_Widget* pOuter);
+  ~IFWL_ComboBoxProxy() override;
+
+  // IFWL_FormProxy
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix) override;
+
+  void Reset() { m_bLButtonUpSelf = FALSE; }
+
+ private:
+  void OnLButtonDown(CFWL_MsgMouse* pMsg);
+  void OnLButtonUp(CFWL_MsgMouse* pMsg);
+  void OnDeactive(CFWL_MsgDeactivate* pMsg);
+  void OnFocusChanged(CFWL_MsgKillFocus* pMsg, FX_BOOL bSet);
+
+  FX_BOOL m_bLButtonDown;
+  FX_BOOL m_bLButtonUpSelf;
+
+  IFWL_ComboBox* m_pComboBox;
+};
+
+#endif  // XFA_FWL_CORE_IFWL_COMBOBOXPROXY_H_