Remove uses of this->foo.

core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.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_render/render_int.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 1518 matching lines @@
 }
 
 FX_BOOL CPDF_DIBSource::TransMask() const {
   return m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK &&
          m_Family == PDFCS_DEVICECMYK;
 }
 
 void CPDF_DIBSource::SetDownSampleSize(int dest_width, int dest_height) {
   if (m_pDecoder) {
     m_pDecoder->DownScale(dest_width, dest_height);
-    this->m_Width = m_pDecoder->GetWidth();
-    this->m_Height = m_pDecoder->GetHeight();
+    m_Width = m_pDecoder->GetWidth();
+    m_Height = m_pDecoder->GetHeight();
   }
 }
 
 void CPDF_DIBSource::ClearImageData() {
   if (m_pDecoder) {
     m_pDecoder->ClearImageData();
   }
 }
 
 CPDF_ImageLoaderHandle::CPDF_ImageLoaderHandle() {
@@ skipping 90 matching lines @@
                                    IFX_Pause* pPause) {
   return LoadHandle->Continue(pPause);
 }
 
 CPDF_ImageLoader::~CPDF_ImageLoader() {
   if (!m_bCached) {
     delete m_pBitmap;
     delete m_pMask;
   }
 }