Make CPDF_Dictionary use unique pointers.

core/fxge/dib/fx_dib_engine_unittest.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.
 
 #include <memory>
 
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_number.h"
 #include "core/fpdfapi/parser/cpdf_stream.h"
 #include "core/fpdfapi/render/render_int.h"
 #include "core/fxcrt/fx_memory.h"
 #include "core/fxge/dib/dib_int.h"
 #include "core/fxge/fx_dib.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/base/ptr_util.h"
 
 TEST(CStretchEngine, OverflowInCtor) {
   FX_RECT clip_rect;
   std::unique_ptr<CPDF_Dictionary> dict_obj =
       pdfium::MakeUnique<CPDF_Dictionary>();
-  dict_obj->SetFor("Width", new CPDF_Number(71000));
-  dict_obj->SetFor("Height", new CPDF_Number(12500));
+  dict_obj->SetNewFor<CPDF_Number>("Width", 71000);
+  dict_obj->SetNewFor<CPDF_Number>("Height", 12500);
   std::unique_ptr<CPDF_Stream> stream =
       pdfium::MakeUnique<CPDF_Stream>(nullptr, 0, dict_obj.release());
   CPDF_DIBSource dib_source;
   dib_source.Load(nullptr, stream.get(), nullptr, nullptr, nullptr, nullptr,
                   false, 0, false);
   CStretchEngine engine(nullptr, FXDIB_8bppRgb, 500, 500, clip_rect,
                         &dib_source, 0);
   EXPECT_EQ(FXDIB_INTERPOL, engine.m_Flags);
 }