Convert GetWidgetRect to return rect.

xfa/fwl/core/cfwl_picturebox.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_picturebox.h"
 
 #include <memory>
 
 #include "third_party/base/ptr_util.h"
 
 CFWL_PictureBox::CFWL_PictureBox(const CFWL_App* app)
     : CFWL_Widget(app, pdfium::MakeUnique<CFWL_WidgetProperties>(), nullptr) {
   m_rtClient.Reset();
   m_rtImage.Reset();
   m_matrix.SetIdentity();
 }
 
 CFWL_PictureBox::~CFWL_PictureBox() {}
 
 FWL_Type CFWL_PictureBox::GetClassID() const {
   return FWL_Type::PictureBox;
 }
 
-void CFWL_PictureBox::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) {
-  if (!bAutoSize) {
-    rect = m_pProperties->m_rtWidget;
-    return;
-  }
+CFX_RectF CFWL_PictureBox::GetWidgetRect(bool bAutoSize) {
+  if (!bAutoSize)
+    return m_pProperties->m_rtWidget;
 
-  rect.Set(0, 0, 0, 0);
+  CFX_RectF rect;
   InflateWidgetRect(rect);
+  return rect;
 }
 
 void CFWL_PictureBox::Update() {
   if (IsLocked())
     return;
   if (!m_pProperties->m_pThemeProvider)
     m_pProperties->m_pThemeProvider = GetAvailableTheme();
 
   GetClientRect(m_rtClient);
 }
 
 void CFWL_PictureBox::DrawWidget(CFX_Graphics* pGraphics,
                                  const CFX_Matrix* pMatrix) {
   if (!pGraphics)
     return;
   if (!m_pProperties->m_pThemeProvider)
     return;
 
   IFWL_ThemeProvider* pTheme = GetAvailableTheme();
   if (HasBorder())
     DrawBorder(pGraphics, CFWL_Part::Border, pTheme, pMatrix);
   if (HasEdge())
     DrawEdge(pGraphics, CFWL_Part::Edge, pTheme, pMatrix);
 }
 
 void CFWL_PictureBox::OnDrawWidget(CFX_Graphics* pGraphics,
                                    const CFX_Matrix* pMatrix) {
   DrawWidget(pGraphics, pMatrix);
 }