Move the message definitions to their own files.

xfa/fwl/core/cfwl_widgetmgr.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/fwl/core/cfwl_widgetmgr.h"
 
-#include "xfa/fwl/core/cfwl_message.h"
 #include "xfa/fwl/core/fwl_noteimp.h"
 #include "xfa/fwl/core/ifwl_app.h"
 #include "xfa/fwl/core/ifwl_form.h"
 #include "xfa/fxfa/app/xfa_fwladapter.h"
 #include "xfa/fxfa/xfa_ffapp.h"
 
 namespace {
 
 const int kNeedRepaintHitPoints = 12;
 const int kNeedRepaintHitPiece = 3;
@@ skipping 447 matching lines @@
   IFWL_Widget* pDstWidget = pMessage->m_pDstTarget;
   const IFWL_App* pApp = pDstWidget->GetOwnerApp();
   if (!pApp)
     return;
 
   CFWL_NoteDriver* pNoteDriver =
       static_cast<CFWL_NoteDriver*>(pApp->GetNoteDriver());
   if (!pNoteDriver)
     return;
 
-  if (IsThreadEnabled())
-    pMessage = static_cast<CFWL_Message*>(pMessage->Clone());
+  std::unique_ptr<CFWL_Message> pClonedMessage = pMessage->Clone();
   if (IsFormDisabled())
-    pNoteDriver->ProcessMessage(pMessage);
+    pNoteDriver->ProcessMessage(pClonedMessage.get());
   else
-    pNoteDriver->QueueMessage(pMessage);
+    pNoteDriver->QueueMessage(std::move(pClonedMessage));
 
 #if (_FX_OS_ == _FX_MACOSX_)
   CFWL_NoteLoop* pTopLoop = pNoteDriver->GetTopLoop();
   if (pTopLoop)
     pNoteDriver->UnqueueMessage(pTopLoop);
 #endif
-
-  if (IsThreadEnabled())
-    pMessage->Release();
-
-  return;
 }
 
 void CFWL_WidgetMgr::OnDrawWidget(IFWL_Widget* pWidget,
                                   CFX_Graphics* pGraphics,
                                   const CFX_Matrix* pMatrix) {
   if (!pWidget || !pGraphics)
     return;
 
   CFX_Graphics* pTemp = DrawWidgetBefore(pWidget, pGraphics, pMatrix);
   CFX_RectF clipCopy;
@@ skipping 254 matching lines @@
       pWidget(widget),
       iRedrawCounter(0)
 #if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
       ,
       bOutsideChanged(false)
 #endif
 {
 }
 
 CFWL_WidgetMgrItem::~CFWL_WidgetMgrItem() {}