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

xfa/src/fxbarcode/qrcode/BC_QRDetector.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_QRDetector.h"
+
 #include <algorithm>
+#include <memory>
 
 #include "xfa/src/fxbarcode/BC_ResultPoint.h"
 #include "xfa/src/fxbarcode/common/BC_CommonBitMatrix.h"
 #include "xfa/src/fxbarcode/qrcode/BC_FinderPatternInfo.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRAlignmentPatternFinder.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRCoderVersion.h"
-#include "xfa/src/fxbarcode/qrcode/BC_QRDetector.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRDetectorResult.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRFinderPattern.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRFinderPatternFinder.h"
 #include "xfa/src/fxbarcode/qrcode/BC_QRGridSampler.h"
 
 CBC_QRDetector::CBC_QRDetector(CBC_CommonBitMatrix* image) : m_image(image) {}
 CBC_QRDetector::~CBC_QRDetector() {}
 CBC_QRDetectorResult* CBC_QRDetector::Detect(int32_t hints, int32_t& e) {
   CBC_QRFinderPatternFinder finder(m_image);
-  CBC_QRFinderPatternInfo* qpi = finder.Find(hints, e);
+  std::unique_ptr<CBC_QRFinderPatternInfo> info(finder.Find(hints, e));
   BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
-  CBC_AutoPtr<CBC_QRFinderPatternInfo> info(qpi);
   CBC_QRDetectorResult* qdr = ProcessFinderPatternInfo(info.get(), e);
   BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
   return qdr;
 }
 CBC_QRDetectorResult* CBC_QRDetector::ProcessFinderPatternInfo(
     CBC_QRFinderPatternInfo* info,
     int32_t& e) {
-  CBC_AutoPtr<CBC_QRFinderPattern> topLeft(info->GetTopLeft());
-  CBC_AutoPtr<CBC_QRFinderPattern> topRight(info->GetTopRight());
-  CBC_AutoPtr<CBC_QRFinderPattern> bottomLeft(info->GetBottomLeft());
+  std::unique_ptr<CBC_QRFinderPattern> topLeft(info->GetTopLeft());
+  std::unique_ptr<CBC_QRFinderPattern> topRight(info->GetTopRight());
+  std::unique_ptr<CBC_QRFinderPattern> bottomLeft(info->GetBottomLeft());
   FX_FLOAT moduleSize =
       CalculateModuleSize(topLeft.get(), topRight.get(), bottomLeft.get());
   if (moduleSize < 1.0f) {
     e = BCExceptionRead;
     BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
   }
   int32_t dimension = ComputeDimension(topLeft.get(), topRight.get(),
                                        bottomLeft.get(), moduleSize, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
   CBC_QRCoderVersion* provisionalVersion =
@@ skipping 205 matching lines @@
   int32_t alignmentAreaBottomY =
       std::min(m_image->GetHeight() - 1, estAlignmentY + allowance);
   CBC_QRAlignmentPatternFinder alignmentFinder(
       m_image, alignmentAreaLeftX, alignmentAreaTopY,
       alignmentAreaRightX - alignmentAreaLeftX,
       alignmentAreaBottomY - alignmentAreaTopY, overallEstModuleSize);
   CBC_QRAlignmentPattern* qap = alignmentFinder.Find(e);
   BC_EXCEPTION_CHECK_ReturnValue(e, NULL);
   return qap;
 }