Split fwl/core class pt I.

xfa/fwl/core/ifwl_monthcalendardp.h

Index: xfa/fwl/core/ifwl_monthcalendardp.h
diff --git a/xfa/fwl/core/ifwl_monthcalendardp.h b/xfa/fwl/core/ifwl_monthcalendardp.h
new file mode 100644
index 0000000000000000000000000000000000000000..0579329efeb547e632d8f8cf69f119ad130053b0
--- /dev/null
+++ b/xfa/fwl/core/ifwl_monthcalendardp.h
@@ -0,0 +1,21 @@
+// 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_MONTHCALENDARDP_H_
+#define XFA_FWL_CORE_IFWL_MONTHCALENDARDP_H_
+
+#include "xfa/fwl/core/ifwl_dataprovider.h"
+
+class IFWL_Widget;
+
+class IFWL_MonthCalendarDP : public IFWL_DataProvider {
+ public:
+  virtual int32_t GetCurDay(IFWL_Widget* pWidget) = 0;
+  virtual int32_t GetCurMonth(IFWL_Widget* pWidget) = 0;
+  virtual int32_t GetCurYear(IFWL_Widget* pWidget) = 0;
+};
+
+#endif  // XFA_FWL_CORE_IFWL_MONTHCALENDARDP_H_