Add PrefStore::GetValues

components/filesystem/public/cpp/prefs/filesystem_json_pref_store.h

 // Copyright 2016 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_FILESYSTEM_PUBLIC_CPP_PREFS_FILESYSTEM_JSON_PREF_STORE_H_
 #define COMPONENTS_FILESYSTEM_PUBLIC_CPP_PREFS_FILESYSTEM_JSON_PREF_STORE_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 48 matching lines @@
  public:
   struct ReadResult;
 
   FilesystemJsonPrefStore(const std::string& pref_filename,
                           filesystem::mojom::FileSystemPtr filesystem,
                           std::unique_ptr<PrefFilter> pref_filter);
 
   // PrefStore overrides:
   bool GetValue(const std::string& key,
                 const base::Value** result) const override;
+  std::unique_ptr<base::DictionaryValue> GetValues() 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,
                 std::unique_ptr<base::Value> value,
                 uint32_t flags) override;
@@ skipping 90 matching lines @@
   bool filtering_in_progress_;
   bool pending_lossy_write_;
   PrefReadError read_error_;
 
   DISALLOW_COPY_AND_ASSIGN(FilesystemJsonPrefStore);
 };
 
 }  // namespace filesystem
 
 #endif  // COMPONENTS_FILESYSTEM_PUBLIC_CPP_PREFS_FILESYSTEM_JSON_PREF_STORE_H_