Revert of Move base/prefs to components/prefs

components/prefs/testing_pref_service.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 BASE_PREFS_TESTING_PREF_SERVICE_H_
-#define BASE_PREFS_TESTING_PREF_SERVICE_H_
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/prefs/pref_registry.h"
-#include "base/prefs/pref_service.h"
-#include "base/prefs/testing_pref_store.h"
-
-class PrefNotifierImpl;
-class PrefRegistrySimple;
-class TestingPrefStore;
-
-// A PrefService subclass for testing. It operates totally in memory and
-// provides additional API for manipulating preferences at the different levels
-// (managed, extension, user) conveniently.
-//
-// Use this via its specializations, e.g. TestingPrefServiceSimple.
-template <class SuperPrefService, class ConstructionPrefRegistry>
-class TestingPrefServiceBase : public SuperPrefService {
- public:
-  virtual ~TestingPrefServiceBase();
-
-  // Read the value of a preference from the managed layer. Returns NULL if the
-  // preference is not defined at the managed layer.
-  const base::Value* GetManagedPref(const std::string& path) const;
-
-  // Set a preference on the managed layer and fire observers if the preference
-  // changed. Assumes ownership of |value|.
-  void SetManagedPref(const std::string& path, base::Value* value);
-
-  // Clear the preference on the managed layer and fire observers if the
-  // preference has been defined previously.
-  void RemoveManagedPref(const std::string& path);
-
-  // Similar to the above, but for user preferences.
-  const base::Value* GetUserPref(const std::string& path) const;
-  void SetUserPref(const std::string& path, base::Value* value);
-  void RemoveUserPref(const std::string& path);
-
-  // Similar to the above, but for recommended policy preferences.
-  const base::Value* GetRecommendedPref(const std::string& path) const;
-  void SetRecommendedPref(const std::string& path, base::Value* value);
-  void RemoveRecommendedPref(const std::string& path);
-
-  // Do-nothing implementation for TestingPrefService.
-  static void HandleReadError(PersistentPrefStore::PrefReadError error) {}
-
- protected:
-  TestingPrefServiceBase(
-      TestingPrefStore* managed_prefs,
-      TestingPrefStore* user_prefs,
-      TestingPrefStore* recommended_prefs,
-      ConstructionPrefRegistry* pref_registry,
-      PrefNotifierImpl* pref_notifier);
-
- private:
-  // Reads the value of the preference indicated by |path| from |pref_store|.
-  // Returns NULL if the preference was not found.
-  const base::Value* GetPref(TestingPrefStore* pref_store,
-                             const std::string& path) const;
-
-  // Sets the value for |path| in |pref_store|.
-  void SetPref(TestingPrefStore* pref_store,
-               const std::string& path,
-               base::Value* value);
-
-  // Removes the preference identified by |path| from |pref_store|.
-  void RemovePref(TestingPrefStore* pref_store, const std::string& path);
-
-  // Pointers to the pref stores our value store uses.
-  scoped_refptr<TestingPrefStore> managed_prefs_;
-  scoped_refptr<TestingPrefStore> user_prefs_;
-  scoped_refptr<TestingPrefStore> recommended_prefs_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestingPrefServiceBase);
-};
-
-// Test version of PrefService.
-class TestingPrefServiceSimple
-    : public TestingPrefServiceBase<PrefService, PrefRegistry> {
- public:
-  TestingPrefServiceSimple();
-  ~TestingPrefServiceSimple() override;
-
-  // This is provided as a convenience for registering preferences on
-  // an existing TestingPrefServiceSimple instance. On a production
-  // PrefService you would do all registrations before constructing
-  // it, passing it a PrefRegistry via its constructor (or via
-  // e.g. PrefServiceFactory).
-  PrefRegistrySimple* registry();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TestingPrefServiceSimple);
-};
-
-template<>
-TestingPrefServiceBase<PrefService, PrefRegistry>::TestingPrefServiceBase(
-    TestingPrefStore* managed_prefs,
-    TestingPrefStore* user_prefs,
-    TestingPrefStore* recommended_prefs,
-    PrefRegistry* pref_registry,
-    PrefNotifierImpl* pref_notifier);
-
-template<class SuperPrefService, class ConstructionPrefRegistry>
-TestingPrefServiceBase<
-    SuperPrefService, ConstructionPrefRegistry>::~TestingPrefServiceBase() {
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-const base::Value* TestingPrefServiceBase<
-    SuperPrefService,
-    ConstructionPrefRegistry>::GetManagedPref(const std::string& path) const {
-  return GetPref(managed_prefs_.get(), path);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-void TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    SetManagedPref(const std::string& path, base::Value* value) {
-  SetPref(managed_prefs_.get(), path, value);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-void TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    RemoveManagedPref(const std::string& path) {
-  RemovePref(managed_prefs_.get(), path);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-const base::Value*
-TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::GetUserPref(
-    const std::string& path) const {
-  return GetPref(user_prefs_.get(), path);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-void TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    SetUserPref(const std::string& path, base::Value* value) {
-  SetPref(user_prefs_.get(), path, value);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-void TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    RemoveUserPref(const std::string& path) {
-  RemovePref(user_prefs_.get(), path);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-const base::Value*
-TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    GetRecommendedPref(const std::string& path) const {
-  return GetPref(recommended_prefs_, path);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-void TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    SetRecommendedPref(const std::string& path, base::Value* value) {
-  SetPref(recommended_prefs_.get(), path, value);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-void TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    RemoveRecommendedPref(const std::string& path) {
-  RemovePref(recommended_prefs_.get(), path);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-const base::Value*
-TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::GetPref(
-    TestingPrefStore* pref_store,
-    const std::string& path) const {
-  const base::Value* res;
-  return pref_store->GetValue(path, &res) ? res : NULL;
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-void TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    SetPref(TestingPrefStore* pref_store,
-            const std::string& path,
-            base::Value* value) {
-  pref_store->SetValue(path, make_scoped_ptr(value),
-                       WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
-}
-
-template <class SuperPrefService, class ConstructionPrefRegistry>
-void TestingPrefServiceBase<SuperPrefService, ConstructionPrefRegistry>::
-    RemovePref(TestingPrefStore* pref_store, const std::string& path) {
-  pref_store->RemoveValue(path, WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
-}
-
-#endif  // BASE_PREFS_TESTING_PREF_SERVICE_H_