1 files changed, 11 insertions, 6 deletions
diff --git a/core/fpdfapi/page/cpdf_pattern.cpp b/core/fpdfapi/page/cpdf_pattern.cpp
index 36ecc98d5..297c77a99 100644
--- a/core/fpdfapi/page/cpdf_pattern.cpp
+++ b/core/fpdfapi/page/cpdf_pattern.cpp
@@ -1,4 +1,4 @@
-// Copyright 2016 PDFium Authors. All rights reserved.
+// Copyright 2016 The PDFium Authors
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -6,14 +6,19 @@
 
 #include "core/fpdfapi/page/cpdf_pattern.h"
 
+#include <utility>
+
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
+#include "third_party/base/check.h"
 
 CPDF_Pattern::CPDF_Pattern(CPDF_Document* pDoc,
-                           CPDF_Object* pObj,
+                           RetainPtr<CPDF_Object> pObj,
                            const CFX_Matrix& parentMatrix)
-    : m_pDocument(pDoc), m_pPatternObj(pObj), m_ParentMatrix(parentMatrix) {
-  ASSERT(m_pDocument);
-  ASSERT(m_pPatternObj);
+    : m_pDocument(pDoc),
+      m_pPatternObj(std::move(pObj)),
+      m_ParentMatrix(parentMatrix) {
+  DCHECK(m_pDocument);
+  DCHECK(m_pPatternObj);
 }
 
 CPDF_Pattern::~CPDF_Pattern() = default;
@@ -27,6 +32,6 @@ CPDF_ShadingPattern* CPDF_Pattern::AsShadingPattern() {
 }
 
 void CPDF_Pattern::SetPatternToFormMatrix() {
-  const CPDF_Dictionary* pDict = pattern_obj()->GetDict();
+  RetainPtr<const CPDF_Dictionary> pDict = pattern_obj()->GetDict();
   m_Pattern2Form = pDict->GetMatrixFor("Matrix") * m_ParentMatrix;
 }