Remove IXFA_* interfaces.

xfa/fxfa/parser/xfa_localemgr.cpp

 // Copyright 2014 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
 
 #include "xfa/fxfa/parser/xfa_localemgr.h"
 
 #include "core/fxcrt/include/fx_xml.h"
 #include "core/include/fxcodec/fx_codec.h"
@@ skipping 1251 matching lines @@
           pCommon ? pCommon->GetFirstChildByClass(XFA_ELEMENT_Locale) : NULL;
       if (pLocale) {
         pLocale->TryCData(XFA_ATTRIBUTE_Value, m_wsConfigLocale, FALSE);
       }
     }
     m_dwLocaleFlags |= 0x01;
   }
   return m_wsConfigLocale;
 }
 static CXFA_TimeZoneProvider* g_pProvider = NULL;
-IXFA_TimeZoneProvider* IXFA_TimeZoneProvider::Create() {
+
+// Static.
+CXFA_TimeZoneProvider* CXFA_TimeZoneProvider::Create() {
   FXSYS_assert(!g_pProvider);
   g_pProvider = new CXFA_TimeZoneProvider();
   return g_pProvider;
 }
-IXFA_TimeZoneProvider* IXFA_TimeZoneProvider::Get() {
+
+// Static.
+CXFA_TimeZoneProvider* CXFA_TimeZoneProvider::Get() {
   if (!g_pProvider) {
     g_pProvider = new CXFA_TimeZoneProvider();
   }
   return g_pProvider;
 }
-void IXFA_TimeZoneProvider::Destroy() {
+
+// Static.
+void CXFA_TimeZoneProvider::Destroy() {
   delete g_pProvider;
   g_pProvider = NULL;
 }
+
 #include <time.h>
 CXFA_TimeZoneProvider::CXFA_TimeZoneProvider() {
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
   _tzset();
   m_tz.tzHour = (int8_t)(_timezone / 3600 * -1);
   m_tz.tzMinute = (int8_t)((FXSYS_abs(_timezone) % 3600) / 60);
 #else
   tzset();
   m_tz.tzHour = (int8_t)(timezone / 3600 * -1);
   m_tz.tzMinute = (int8_t)((FXSYS_abs((int)timezone) % 3600) / 60);
 #endif
 }
 CXFA_TimeZoneProvider::~CXFA_TimeZoneProvider() {}
 void CXFA_TimeZoneProvider::SetTimeZone(FX_TIMEZONE& tz) {
   m_tz = tz;
 }
 void CXFA_TimeZoneProvider::GetTimeZone(FX_TIMEZONE& tz) {
   tz = m_tz;
 }