Return unique_ptr from CXFA_FFApp::CreateDoc.

xfa/fxfa/xfa_ffapp.h

 // 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
 
 #ifndef XFA_FXFA_XFA_FFAPP_H_
 #define XFA_FXFA_XFA_FFAPP_H_
 
 #include <memory>
@@ skipping 17 matching lines @@
 // Layering prevents fxcrt from knowing about CPDF_Streams; this could go
 // in fpdfsdk, but it is XFA-Only.
 CFX_RetainPtr<IFX_SeekableReadStream> MakeSeekableReadStream(
     const std::vector<CPDF_Stream*>& streams);
 
 class CXFA_FFApp {
  public:
   explicit CXFA_FFApp(IXFA_AppProvider* pProvider);
   ~CXFA_FFApp();
 
-  CXFA_FFDoc* CreateDoc(IXFA_DocEnvironment* pDocEnvironment,
-                        const CFX_RetainPtr<IFX_SeekableReadStream>& pStream);
-  CXFA_FFDoc* CreateDoc(IXFA_DocEnvironment* pDocEnvironment,
-                        CPDF_Document* pPDFDoc);
+  std::unique_ptr<CXFA_FFDoc> CreateDoc(IXFA_DocEnvironment* pDocEnvironment,
+                                        CPDF_Document* pPDFDoc);
   void SetDefaultFontMgr(std::unique_ptr<CXFA_DefFontMgr> pFontMgr);
 
   CXFA_FFDocHandler* GetDocHandler();
   CXFA_FWLAdapterWidgetMgr* GetWidgetMgr(CFWL_WidgetMgrDelegate* pDelegate);
   CFGAS_FontMgr* GetFDEFontMgr();
   CXFA_FWLTheme* GetFWLTheme();
 
   IXFA_AppProvider* GetAppProvider() const { return m_pProvider; }
   const CFWL_App* GetFWLApp() const { return m_pFWLApp.get(); }
   IFWL_AdapterTimerMgr* GetTimerMgr() const;
@@ skipping 27 matching lines @@
   std::unique_ptr<CXFA_FWLAdapterWidgetMgr> m_pAdapterWidgetMgr;
   CFWL_WidgetMgrDelegate* m_pWidgetMgrDelegate;  // not owned.
 
   // |m_pFWLApp| has to be released first, then |m_pFWLTheme| since the former
   // may refers to theme manager and the latter refers to font manager.
   std::unique_ptr<CXFA_FWLTheme> m_pFWLTheme;
   std::unique_ptr<CFWL_App> m_pFWLApp;
 };
 
 #endif  // XFA_FXFA_XFA_FFAPP_H_