Make //crypto factories return std::unique_ptr<>s

crypto/nss_util_internal.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CRYPTO_NSS_UTIL_INTERNAL_H_
 #define CRYPTO_NSS_UTIL_INTERNAL_H_
 
 #include <secmodt.h>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "crypto/crypto_export.h"
 #include "crypto/scoped_nss_types.h"
 
 namespace base {
 class FilePath;
 }
 
 // These functions return a type defined in an NSS header, and so cannot be
 // declared in nss_util.h.  Hence, they are declared here.
 
 namespace crypto {
 
 // Opens an NSS software database in folder |path|, with the (potentially)
 // user-visible description |description|. Returns the slot for the opened
-// database, or NULL if the database could not be opened.
+// database, or nullptr if the database could not be opened.
 CRYPTO_EXPORT ScopedPK11Slot OpenSoftwareNSSDB(const base::FilePath& path,
                                                const std::string& description);
 
 #if !defined(OS_CHROMEOS)
 // Returns a reference to the default NSS key slot for storing persistent data.
 // Caller must release returned reference with PK11_FreeSlot.
 CRYPTO_EXPORT PK11SlotInfo* GetPersistentNSSKeySlot() WARN_UNUSED_RESULT;
 #endif
 
 // A helper class that acquires the SECMOD list read lock while the
@@ skipping 12 matching lines @@
 // Returns a reference to the system-wide TPM slot if it is loaded. If it is not
 // loaded and |callback| is non-null, the |callback| will be run once the slot
 // is loaded.
 CRYPTO_EXPORT ScopedPK11Slot GetSystemNSSKeySlot(
     const base::Callback<void(ScopedPK11Slot)>& callback) WARN_UNUSED_RESULT;
 
 // Sets the test system slot to |slot|, which means that |slot| will be exposed
 // through |GetSystemNSSKeySlot| and |IsTPMTokenReady| will return true.
 // |InitializeTPMTokenAndSystemSlot|, which triggers the TPM initialization,
 // does not have to be called if the test system slot is set.
-// This must must not be called consecutively with a |slot| != NULL. If |slot|
-// is NULL, the test system slot is unset.
+// This must must not be called consecutively with a |slot| != nullptr. If
+// |slot| is nullptr, the test system slot is unset.
 CRYPTO_EXPORT void SetSystemKeySlotForTesting(ScopedPK11Slot slot);
 
 // Prepare per-user NSS slot mapping. It is safe to call this function multiple
 // times. Returns true if the user was added, or false if it already existed.
 CRYPTO_EXPORT bool InitializeNSSForChromeOSUser(
     const std::string& username_hash,
     const base::FilePath& path);
 
 // Returns whether TPM for ChromeOS user still needs initialization. If
 // true is returned, the caller can proceed to initialize TPM slot for the
@@ skipping 32 matching lines @@
 
 // Closes the NSS DB for |username_hash| that was previously opened by the
 // *Initialize*ForChromeOSUser functions.
 CRYPTO_EXPORT void CloseChromeOSUserForTesting(
     const std::string& username_hash);
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace crypto
 
 #endif  // CRYPTO_NSS_UTIL_INTERNAL_H_