Remove xfa/src/fwl/src and move code up a level.

xfa/src/fwl/basewidget/fwl_scrollbarimp.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/src/fwl/src/basewidget/fwl_scrollbarimp.h"
+#include "xfa/src/fwl/basewidget/fwl_scrollbarimp.h"
 
 #include "xfa/include/fwl/basewidget/fwl_scrollbar.h"
 #include "xfa/include/fwl/core/fwl_theme.h"
-#include "xfa/src/fwl/src/core/fwl_noteimp.h"
-#include "xfa/src/fwl/src/core/fwl_targetimp.h"
-#include "xfa/src/fwl/src/core/fwl_widgetimp.h"
+#include "xfa/src/fwl/core/fwl_noteimp.h"
+#include "xfa/src/fwl/core/fwl_targetimp.h"
+#include "xfa/src/fwl/core/fwl_widgetimp.h"
 
 #define FWL_SCROLLBAR_Elapse 500
 #define FWL_SCROLLBAR_MinThumb 5
 
 // static
 IFWL_ScrollBar* IFWL_ScrollBar::Create(
     const CFWL_WidgetImpProperties& properties,
     IFWL_Widget* pOuter) {
   IFWL_ScrollBar* pScrollBar = new IFWL_ScrollBar;
   CFWL_ScrollBarImp* pScrollBarImpl = new CFWL_ScrollBarImp(properties, pOuter);
@@ skipping 772 matching lines @@
 }
 void CFWL_ScrollBarImpDelegate::DoMouseHover(int32_t iItem,
                                              const CFX_RectF& rtItem,
                                              int32_t& iState) {
   if (iState == FWL_PARTSTATE_SCB_Hovered) {
     return;
   }
   iState = FWL_PARTSTATE_SCB_Hovered;
   m_pOwner->Repaint(&rtItem);
 }