Fixup FX_RECT and FX_SMALL_RECT classes.

core/src/fpdfapi/fpdf_page/fpdf_page.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 "core/src/fpdfapi/fpdf_page/pageint.h"
 
 #include <algorithm>
 
@@ skipping 233 matching lines @@
   for (int i = 0; i < m_nChars; ++i) {
     FX_DWORD charcode =
         m_nChars == 1 ? (FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[i];
     if (i > 0) {
       if (charcode == (FX_DWORD)-1) {
         curpos -= (m_pCharPos[i - 1] * fontsize) / 1000;
         continue;
       }
       m_pCharPos[i - 1] = curpos;
     }
-    FX_RECT char_rect;
-    pFont->GetCharBBox(charcode, char_rect, level);
+    FX_RECT char_rect = pFont->GetCharBBox(charcode, level);
     FX_FLOAT charwidth;
     if (!bVertWriting) {
       if (min_y > char_rect.top) {
         min_y = (FX_FLOAT)char_rect.top;
       }
       if (max_y < char_rect.top) {
         max_y = (FX_FLOAT)char_rect.top;
       }
       if (min_y > char_rect.bottom) {
         min_y = (FX_FLOAT)char_rect.bottom;
@@ skipping 493 matching lines @@
   matrix = m_PageMatrix;
   matrix.Concat(display_matrix);
 }
 
 CPDF_ParseOptions::CPDF_ParseOptions() {
   m_bTextOnly = FALSE;
   m_bMarkedContent = TRUE;
   m_bSeparateForm = TRUE;
   m_bDecodeInlineImage = FALSE;
 }