Convert GetWidgetRect to return rect.

xfa/fwl/core/cfwl_pushbutton.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_pushbutton.h"
 
 #include <memory>
 #include <utility>
@@ skipping 17 matching lines @@
   m_rtClient.Set(0, 0, 0, 0);
   m_rtCaption.Set(0, 0, 0, 0);
 }
 
 CFWL_PushButton::~CFWL_PushButton() {}
 
 FWL_Type CFWL_PushButton::GetClassID() const {
   return FWL_Type::PushButton;
 }
 
-void CFWL_PushButton::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) {
-  if (!bAutoSize) {
-    rect = m_pProperties->m_rtWidget;
-    return;
-  }
+CFX_RectF CFWL_PushButton::GetWidgetRect(bool bAutoSize) {
+  if (!bAutoSize)
+    return m_pProperties->m_rtWidget;
 
-  rect.Set(0, 0, 0, 0);
   if (!m_pProperties->m_pThemeProvider)
     m_pProperties->m_pThemeProvider = GetAvailableTheme();
 
   FX_FLOAT* fcaption =
       static_cast<FX_FLOAT*>(GetThemeCapacity(CFWL_WidgetCapacity::Margin));
+  CFX_RectF rect;
   rect.Inflate(*fcaption, *fcaption);
   InflateWidgetRect(rect);
+  return rect;
 }
 
 void CFWL_PushButton::SetStates(uint32_t dwStates) {
   if (dwStates & FWL_WGTSTATE_Disabled) {
     m_pProperties->m_dwStates = FWL_WGTSTATE_Disabled;
     return;
   }
   CFWL_Widget::SetStates(dwStates);
 }
 
@@ skipping 236 matching lines @@
   if (pMsg->m_dwKeyCode != FWL_VKEY_Return)
     return;
 
   CFWL_EvtMouse wmMouse(this);
   wmMouse.m_dwCmd = FWL_MouseCommand::LeftButtonUp;
   DispatchEvent(&wmMouse);
 
   CFWL_Event wmClick(CFWL_Event::Type::Click, this);
   DispatchEvent(&wmClick);
 }