Use std::vector as internal storage for CPDF_Array

core/fpdfapi/fpdf_render/fpdf_render_image.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/fpdfapi/fpdf_render/render_int.h"
 
 #include <utility>
 #include <vector>
@@ skipping 399 matching lines @@
     CPDF_Object* pFilters =
         m_pImageObject->m_pImage->GetStream()->GetDict()->GetDirectObjectBy(
             "Filter");
     if (pFilters) {
       if (pFilters->IsName()) {
         CFX_ByteStringC bsDecodeType = pFilters->GetConstString();
         if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") {
           m_Flags |= FXRENDER_IMAGE_LOSSY;
         }
       } else if (CPDF_Array* pArray = pFilters->AsArray()) {
-        for (uint32_t i = 0; i < pArray->GetCount(); i++) {
+        for (size_t i = 0; i < pArray->GetCount(); i++) {
           CFX_ByteStringC bsDecodeType = pArray->GetConstStringAt(i);
           if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") {
             m_Flags |= FXRENDER_IMAGE_LOSSY;
             break;
           }
         }
       }
     }
   }
   if (m_pRenderStatus->m_Options.m_Flags & RENDER_NOIMAGESMOOTH) {
@@ skipping 499 matching lines @@
           comps = pCS->CountComponents();
         }
         CFX_FixedBufGrow<FX_FLOAT, 8> float_array(comps);
         FX_FLOAT* pFloats = float_array;
         FX_SAFE_UINT32 num_floats = comps;
         num_floats *= sizeof(FX_FLOAT);
         if (!num_floats.IsValid()) {
           return NULL;
         }
         FXSYS_memset(pFloats, 0, num_floats.ValueOrDie());
-        int count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
-        for (int i = 0; i < count; i++) {
+        size_t count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
+        for (size_t i = 0; i < count; i++) {
           pFloats[i] = pBC->GetNumberAt(i);
         }
         pCS->GetRGB(pFloats, R, G, B);
         back_color = 0xff000000 | ((int32_t)(R * 255) << 16) |
                      ((int32_t)(G * 255) << 8) | (int32_t)(B * 255);
         m_pContext->GetDocument()->GetPageData()->ReleaseColorSpace(pCSObj);
       }
     }
     bitmap.Clear(back_color);
   } else {
@@ skipping 45 matching lines @@
   } else if (pFunc) {
     int size = dest_pitch * height;
     for (int i = 0; i < size; i++) {
       dest_buf[i] = transfers[src_buf[i]];
     }
   } else {
     FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height);
   }
   return pMask.release();
 }