Get rid of CBC_AutoPtr and use std::unique_ptr instead.

xfa/src/fxbarcode/qrcode/BC_QRGridSampler.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
 // Original code is licensed as follows:
 /*
  * Copyright 2007 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
+#include "xfa/src/fxbarcode/qrcode/BC_QRGridSampler.h"
+
+#include <memory>
+
 #include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
 #include "xfa/src/fxbarcode/common/BC_CommonPerspectiveTransform.h"
-#include "xfa/src/fxbarcode/qrcode/BC_QRGridSampler.h"
 #include "xfa/src/fxbarcode/utils.h"
 
 CBC_QRGridSampler CBC_QRGridSampler::m_gridSampler;
 
 CBC_QRGridSampler::CBC_QRGridSampler() {}
 CBC_QRGridSampler::~CBC_QRGridSampler() {}
 CBC_QRGridSampler& CBC_QRGridSampler::GetInstance() {
   return m_gridSampler;
 }
 void CBC_QRGridSampler::CheckAndNudgePoints(CBC_CommonBitMatrix* image,
@@ skipping 64 matching lines @@
                                                    FX_FLOAT p4ToY,
                                                    FX_FLOAT p1FromX,
                                                    FX_FLOAT p1FromY,
                                                    FX_FLOAT p2FromX,
                                                    FX_FLOAT p2FromY,
                                                    FX_FLOAT p3FromX,
                                                    FX_FLOAT p3FromY,
                                                    FX_FLOAT p4FromX,
                                                    FX_FLOAT p4FromY,
                                                    int32_t& e) {
-  CBC_AutoPtr<CBC_CommonPerspectiveTransform> transform(
+  std::unique_ptr<CBC_CommonPerspectiveTransform> transform(
       CBC_CommonPerspectiveTransform::QuadrilateralToQuadrilateral(
           p1ToX, p1ToY, p2ToX, p2ToY, p3ToX, p3ToY, p4ToX, p4ToY, p1FromX,
           p1FromY, p2FromX, p2FromY, p3FromX, p3FromY, p4FromX, p4FromY));
-  CBC_CommonBitMatrix* tempBitM = new CBC_CommonBitMatrix();
-  tempBitM->Init(dimensionX, dimensionY);
-  CBC_AutoPtr<CBC_CommonBitMatrix> bits(tempBitM);
+  std::unique_ptr<CBC_CommonBitMatrix> bits(new CBC_CommonBitMatrix());
+  bits->Init(dimensionX, dimensionY);
   CFX_FloatArray points;
   points.SetSize(dimensionX << 1);
   for (int32_t y = 0; y < dimensionY; y++) {
     int32_t max = points.GetSize();
     FX_FLOAT iValue = (FX_FLOAT)(y + 0.5f);
     int32_t x;
     for (x = 0; x < max; x += 2) {
       points[x] = (FX_FLOAT)((x >> 1) + 0.5f);
       points[x + 1] = iValue;
     }
     transform->TransformPoints(&points);
     CheckAndNudgePoints(image, &points, e);
     BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
     for (x = 0; x < max; x += 2) {
       if (image->Get((int32_t)points[x], (int32_t)points[x + 1])) {
         bits->Set(x >> 1, y);
       }
     }
   }
   return bits.release();
 }