Remove inner FX_DATETIME struct from CPDFSDK_DateTime

fpdfsdk/include/cpdfsdk_datetime.h

 // 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 FPDFSDK_INCLUDE_CPDFSDK_DATETIME_H_
 #define FPDFSDK_INCLUDE_CPDFSDK_DATETIME_H_
 
 #if _FX_OS_ == _FX_ANDROID_
@@ skipping 15 matching lines @@
   bool operator!=(const CPDFSDK_DateTime& datetime) const;
 
   CPDFSDK_DateTime& FromPDFDateTimeString(const CFX_ByteString& dtStr);
   CFX_ByteString ToCommonDateTimeString();
   CFX_ByteString ToPDFDateTimeString();
   void ToSystemTime(FX_SYSTEMTIME& st);
   time_t ToTime_t() const;
   CPDFSDK_DateTime ToGMT() const;
   CPDFSDK_DateTime& AddDays(short days);
   CPDFSDK_DateTime& AddSeconds(int seconds);
-
   void ResetDateTime();
 
  private:
-  struct FX_DATETIME {
-    int16_t year;
-    uint8_t month;
-    uint8_t day;
-    uint8_t hour;
-    uint8_t minute;
-    uint8_t second;
-    int8_t tzHour;
-    uint8_t tzMinute;
-  } dt;
+  int16_t m_year;
+  uint8_t m_month;
+  uint8_t m_day;
+  uint8_t m_hour;
+  uint8_t m_minute;
+  uint8_t m_second;
+  int8_t m_tzHour;
+  uint8_t m_tzMinute;
 };
 
 #endif  // FPDFSDK_INCLUDE_CPDFSDK_DATETIME_H_