Reland "Fix chromium-style errors."

core/src/fxge/dib/fx_dib_main.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/include/fxge/fx_dib.h"
 
 #include <limits.h>
 
@@ skipping 24 matching lines @@
   b = FXARGB_B(argb);
 }
 void ArgbDecode(FX_DWORD argb, int& a, FX_COLORREF& rgb) {
   a = FXARGB_A(argb);
   rgb = FXSYS_RGB(FXARGB_R(argb), FXARGB_G(argb), FXARGB_B(argb));
 }
 FX_DWORD ArgbEncode(int a, FX_COLORREF rgb) {
   return FXARGB_MAKE(a, FXSYS_GetRValue(rgb), FXSYS_GetGValue(rgb),
                      FXSYS_GetBValue(rgb));
 }
+
 CFX_DIBSource::CFX_DIBSource() {
   m_bpp = 0;
   m_AlphaFlag = 0;
   m_Width = m_Height = 0;
   m_Pitch = 0;
   m_pPalette = NULL;
   m_pAlphaMask = NULL;
 }
+
 CFX_DIBSource::~CFX_DIBSource() {
   FX_Free(m_pPalette);
   delete m_pAlphaMask;
 }
+
+uint8_t* CFX_DIBSource::GetBuffer() const {
+  return NULL;
+}
+
+FX_BOOL CFX_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const {
+  return FALSE;
+}
+
 CFX_DIBitmap::CFX_DIBitmap() {
   m_bExtBuf = FALSE;
   m_pBuffer = NULL;
   m_pPalette = NULL;
 }
+
 #define _MAX_OOM_LIMIT_ 12000000
 FX_BOOL CFX_DIBitmap::Create(int width,
                              int height,
                              FXDIB_Format format,
                              uint8_t* pBuffer,
                              int pitch) {
   m_pBuffer = NULL;
   m_bpp = (uint8_t)format;
   m_AlphaFlag = (uint8_t)(format >> 8);
   m_Width = m_Height = m_Pitch = 0;
@@ skipping 34 matching lines @@
       if (!m_bExtBuf) {
         FX_Free(m_pBuffer);
         m_pBuffer = NULL;
         m_Width = m_Height = m_Pitch = 0;
         return FALSE;
       }
     }
   }
   return TRUE;
 }
+
 FX_BOOL CFX_DIBitmap::Copy(const CFX_DIBSource* pSrc) {
   if (m_pBuffer) {
     return FALSE;
   }
   if (!Create(pSrc->GetWidth(), pSrc->GetHeight(), pSrc->GetFormat())) {
     return FALSE;
   }
   CopyPalette(pSrc->GetPalette());
   CopyAlphaMask(pSrc->m_pAlphaMask);
   for (int row = 0; row < pSrc->GetHeight(); row++) {
     FXSYS_memcpy(m_pBuffer + row * m_Pitch, pSrc->GetScanline(row), m_Pitch);
   }
   return TRUE;
 }
+
 CFX_DIBitmap::~CFX_DIBitmap() {
-  if (!m_bExtBuf) {
+  if (!m_bExtBuf)
     FX_Free(m_pBuffer);
-  }
-  m_pBuffer = NULL;
+
+  m_pBuffer = nullptr;
 }
+
+uint8_t* CFX_DIBitmap::GetBuffer() const {
+  return m_pBuffer;
+}
+
+const uint8_t* CFX_DIBitmap::GetScanline(int line) const {
+  return m_pBuffer ? m_pBuffer + line * m_Pitch : nullptr;
+}
+
 void CFX_DIBitmap::TakeOver(CFX_DIBitmap* pSrcBitmap) {
-  if (!m_bExtBuf) {
+  if (!m_bExtBuf)
     FX_Free(m_pBuffer);
-  }
+
   FX_Free(m_pPalette);
   delete m_pAlphaMask;
   m_pBuffer = pSrcBitmap->m_pBuffer;
   m_pPalette = pSrcBitmap->m_pPalette;
   m_pAlphaMask = pSrcBitmap->m_pAlphaMask;
-  pSrcBitmap->m_pBuffer = NULL;
-  pSrcBitmap->m_pPalette = NULL;
-  pSrcBitmap->m_pAlphaMask = NULL;
+  pSrcBitmap->m_pBuffer = nullptr;
+  pSrcBitmap->m_pPalette = nullptr;
+  pSrcBitmap->m_pAlphaMask = nullptr;
   m_bpp = pSrcBitmap->m_bpp;
   m_bExtBuf = pSrcBitmap->m_bExtBuf;
   m_AlphaFlag = pSrcBitmap->m_AlphaFlag;
   m_Width = pSrcBitmap->m_Width;
   m_Height = pSrcBitmap->m_Height;
   m_Pitch = pSrcBitmap->m_Pitch;
 }
+
 CFX_DIBitmap* CFX_DIBSource::Clone(const FX_RECT* pClip) const {
   FX_RECT rect(0, 0, m_Width, m_Height);
   if (pClip) {
     rect.Intersect(*pClip);
     if (rect.IsEmpty()) {
       return NULL;
     }
   }
   CFX_DIBitmap* pNewBitmap = new CFX_DIBitmap;
   if (!pNewBitmap->Create(rect.Width(), rect.Height(), GetFormat())) {
@@ skipping 1547 matching lines @@
   if (!m_pBitmap->Create(width, height, src_format)) {
     delete m_pBitmap;
     m_pBitmap = NULL;
     return FALSE;
   }
   if (pSrcPalette) {
     m_pBitmap->CopyPalette(pSrcPalette);
   }
   return TRUE;
 }