Convert //components/prefs from scoped_ptr to std::unique_ptr

components/prefs/json_pref_store.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 COMPONENTS_PREFS_JSON_PREF_STORE_H_
 #define COMPONENTS_PREFS_JSON_PREF_STORE_H_
 
 #include <stdint.h>
 
+#include <memory>
 #include <set>
 #include <string>
 
 #include "base/callback_forward.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "base/files/important_file_writer.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/threading/non_thread_safe.h"
 #include "components/prefs/base_prefs_export.h"
 #include "components/prefs/persistent_pref_store.h"
 
 class PrefFilter;
 
 namespace base {
 class Clock;
@@ skipping 22 matching lines @@
   // Returns instance of SequencedTaskRunner which guarantees that file
   // operations on the same file will be executed in sequenced order.
   static scoped_refptr<base::SequencedTaskRunner> GetTaskRunnerForFile(
       const base::FilePath& pref_filename,
       base::SequencedWorkerPool* worker_pool);
 
   // Same as the constructor below with no alternate filename.
   JsonPrefStore(
       const base::FilePath& pref_filename,
       const scoped_refptr<base::SequencedTaskRunner>& sequenced_task_runner,
-      scoped_ptr<PrefFilter> pref_filter);
+      std::unique_ptr<PrefFilter> pref_filter);
 
   // |sequenced_task_runner| must be a shutdown-blocking task runner, ideally
   // created by the GetTaskRunnerForFile() method above.
   // |pref_filename| is the path to the file to read prefs from.
   // |pref_alternate_filename| is the path to an alternate file which the
   // desired prefs may have previously been written to. If |pref_filename|
   // doesn't exist and |pref_alternate_filename| does, |pref_alternate_filename|
   // will be moved to |pref_filename| before the read occurs.
   JsonPrefStore(
       const base::FilePath& pref_filename,
       const base::FilePath& pref_alternate_filename,
       const scoped_refptr<base::SequencedTaskRunner>& sequenced_task_runner,
-      scoped_ptr<PrefFilter> pref_filter);
+      std::unique_ptr<PrefFilter> pref_filter);
 
   // PrefStore overrides:
   bool GetValue(const std::string& key,
                 const base::Value** result) const override;
   void AddObserver(PrefStore::Observer* observer) override;
   void RemoveObserver(PrefStore::Observer* observer) override;
   bool HasObservers() const override;
   bool IsInitializationComplete() const override;
 
   // PersistentPrefStore overrides:
   bool GetMutableValue(const std::string& key, base::Value** result) override;
   void SetValue(const std::string& key,
-                scoped_ptr<base::Value> value,
+                std::unique_ptr<base::Value> value,
                 uint32_t flags) override;
   void SetValueSilently(const std::string& key,
-                        scoped_ptr<base::Value> value,
+                        std::unique_ptr<base::Value> value,
                         uint32_t flags) override;
   void RemoveValue(const std::string& key, uint32_t flags) override;
   bool ReadOnly() const override;
   PrefReadError GetReadError() const override;
   // Note this method may be asynchronous if this instance has a |pref_filter_|
   // in which case it will return PREF_READ_ERROR_ASYNCHRONOUS_TASK_INCOMPLETE.
   // See details in pref_filter.h.
   PrefReadError ReadPrefs() override;
   void ReadPrefsAsync(ReadErrorDelegate* error_delegate) override;
   void CommitPendingWrite() override;
@@ skipping 17 matching lines @@
   class COMPONENTS_PREFS_EXPORT WriteCountHistogram {
    public:
     static const int32_t kHistogramWriteReportIntervalMins;
 
     WriteCountHistogram(const base::TimeDelta& commit_interval,
                         const base::FilePath& path);
     // Constructor for testing. |clock| is a test Clock that is used to retrieve
     // the time.
     WriteCountHistogram(const base::TimeDelta& commit_interval,
                         const base::FilePath& path,
-                        scoped_ptr<base::Clock> clock);
+                        std::unique_ptr<base::Clock> clock);
     ~WriteCountHistogram();
 
     // Record that a write has occured.
     void RecordWriteOccured();
 
     // Reports writes (that have not yet been reported) in all of the recorded
     // intervals that have elapsed up until current time.
     void ReportOutstandingWrites();
 
     base::HistogramBase* GetHistogram();
 
    private:
     // The minimum interval at which writes can occur.
     const base::TimeDelta commit_interval_;
 
     // The path to the file.
     const base::FilePath path_;
 
     // Clock which is used to retrieve the current time.
-    scoped_ptr<base::Clock> clock_;
+    std::unique_ptr<base::Clock> clock_;
 
     // The interval at which to report write counts.
     const base::TimeDelta report_interval_;
 
     // The time at which the last histogram value was reported for the number
     // of write counts.
     base::Time last_report_time_;
 
     // The number of writes that have occured since the last write count was
     // reported.
@@ skipping 13 matching lines @@
   friend class base::JsonPrefStoreLossyWriteTest;
 
   ~JsonPrefStore() override;
 
   // This method is called after the JSON file has been read.  It then hands
   // |value| (or an empty dictionary in some read error cases) to the
   // |pref_filter| if one is set. It also gives a callback pointing at
   // FinalizeFileRead() to that |pref_filter_| which is then responsible for
   // invoking it when done. If there is no |pref_filter_|, FinalizeFileRead()
   // is invoked directly.
-  void OnFileRead(scoped_ptr<ReadResult> read_result);
+  void OnFileRead(std::unique_ptr<ReadResult> read_result);
 
   // ImportantFileWriter::DataSerializer overrides:
   bool SerializeData(std::string* output) override;
 
   // This method is called after the JSON file has been read and the result has
   // potentially been intercepted and modified by |pref_filter_|.
   // |initialization_successful| is pre-determined by OnFileRead() and should
   // be used when reporting OnInitializationCompleted().
   // |schedule_write| indicates whether a write should be immediately scheduled
   // (typically because the |pref_filter_| has already altered the |prefs|) --
   // this will be ignored if this store is read-only.
   void FinalizeFileRead(bool initialization_successful,
-                        scoped_ptr<base::DictionaryValue> prefs,
+                        std::unique_ptr<base::DictionaryValue> prefs,
                         bool schedule_write);
 
   // Schedule a write with the file writer as long as |flags| doesn't contain
   // WriteablePrefStore::LOSSY_PREF_WRITE_FLAG.
   void ScheduleWrite(uint32_t flags);
 
   const base::FilePath path_;
   const base::FilePath alternate_path_;
   const scoped_refptr<base::SequencedTaskRunner> sequenced_task_runner_;
 
-  scoped_ptr<base::DictionaryValue> prefs_;
+  std::unique_ptr<base::DictionaryValue> prefs_;
 
   bool read_only_;
 
   // Helper for safely writing pref data.
   base::ImportantFileWriter writer_;
 
-  scoped_ptr<PrefFilter> pref_filter_;
+  std::unique_ptr<PrefFilter> pref_filter_;
   base::ObserverList<PrefStore::Observer, true> observers_;
 
-  scoped_ptr<ReadErrorDelegate> error_delegate_;
+  std::unique_ptr<ReadErrorDelegate> error_delegate_;
 
   bool initialized_;
   bool filtering_in_progress_;
   bool pending_lossy_write_;
   PrefReadError read_error_;
 
   std::set<std::string> keys_need_empty_value_;
 
   WriteCountHistogram write_count_histogram_;
 
   DISALLOW_COPY_AND_ASSIGN(JsonPrefStore);
 };
 
 #endif  // COMPONENTS_PREFS_JSON_PREF_STORE_H_