Return const-ref object in a few CPWL_Wnd getters.

fpdfsdk/src/pdfwindow/PWL_Utils.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 "fpdfsdk/include/pdfwindow/PWL_Icon.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Utils.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Wnd.h"
 
@@ skipping 1451 matching lines @@
 }
 
 void CPWL_Utils::DrawBorder(CFX_RenderDevice* pDevice,
                             CFX_Matrix* pUser2Device,
                             const CPDF_Rect& rect,
                             FX_FLOAT fWidth,
                             const CPWL_Color& color,
                             const CPWL_Color& crLeftTop,
                             const CPWL_Color& crRightBottom,
                             int32_t nStyle,
-                            const CPWL_Dash& dash,
                             int32_t nTransparancy) {
   FX_FLOAT fLeft = rect.left;
   FX_FLOAT fRight = rect.right;
   FX_FLOAT fTop = rect.top;
   FX_FLOAT fBottom = rect.bottom;
 
   if (fWidth > 0.0f) {
     FX_FLOAT fHalfWidth = fWidth / 2.0f;
 
     switch (nStyle) {
@@ skipping 2192 matching lines @@
           break;
         case COLORTYPE_RGB:
           CPWL_Utils::ConvertCMYK2RGB(fColor1, fColor2, fColor3, fColor4,
                                       fColor1, fColor2, fColor3);
           break;
       }
       break;
   }
   nColorType = other_nColorType;
 }