Make CPDF_Stream() take unique_ptr's to its dictionary.

core/fpdfapi/edit/cpdf_pagecontentgenerator.cpp

 // Copyright 2016 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/edit/cpdf_pagecontentgenerator.h"
 
 #include "core/fpdfapi/edit/cpdf_creator.h"
 #include "core/fpdfapi/page/cpdf_docpagedata.h"
@@ skipping 108 matching lines @@
                                             uint32_t size,
                                             CFX_Matrix& matrix) {
   if (!data || !size)
     return;
 
   buf << "q " << matrix << " cm ";
 
   CFX_FloatRect bbox = m_pPage->GetPageBBox();
   matrix.TransformRect(bbox);
 
-  CPDF_Dictionary* pFormDict =
-      new CPDF_Dictionary(m_pDocument->GetByteStringPool());
+  auto pFormDict =
+      pdfium::MakeUnique<CPDF_Dictionary>(m_pDocument->GetByteStringPool());
   pFormDict->SetNewFor<CPDF_Name>("Type", "XObject");
   pFormDict->SetNewFor<CPDF_Name>("Subtype", "Form");
   pFormDict->SetRectFor("BBox", bbox);
 
   CPDF_Stream* pStream = m_pDocument->NewIndirect<CPDF_Stream>();
-  pStream->InitStream(data, size, pFormDict);
+  pStream->InitStream(data, size, std::move(pFormDict));
 
   CFX_ByteString name = RealizeResource(pStream->GetObjNum(), "XObject");
   buf << "/" << PDF_NameEncode(name) << " Do Q\n";
 }
 
 void CPDF_PageContentGenerator::TransformContent(CFX_Matrix& matrix) {
   CPDF_Dictionary* pDict = m_pPage->m_pFormDict;
   CPDF_Object* pContent =
       pDict ? pDict->GetDirectObjectFor("Contents") : nullptr;
   if (!pContent)
@@ skipping 30 matching lines @@
   } else if (CPDF_Stream* pStream = pContent->AsStream()) {
     CPDF_StreamAcc contentStream;
     contentStream.LoadAllData(pStream);
     ProcessForm(buf, contentStream.GetData(), contentStream.GetSize(), matrix);
   }
   CPDF_Stream* pStream = m_pDocument->NewIndirect<CPDF_Stream>();
   pStream->SetData(buf.GetBuffer(), buf.GetLength());
   m_pPage->m_pFormDict->SetNewFor<CPDF_Reference>("Contents", m_pDocument,
                                                   pStream->GetObjNum());
 }