Componentize HostContentSettingsMap and content settings providers.

chrome/browser/content_settings/content_settings_pref_provider.h

Index: chrome/browser/content_settings/content_settings_pref_provider.h
diff --git a/chrome/browser/content_settings/content_settings_pref_provider.h b/chrome/browser/content_settings/content_settings_pref_provider.h
deleted file mode 100644
index 8ae666415598732a70db736b054be60d829c246c..0000000000000000000000000000000000000000
--- a/chrome/browser/content_settings/content_settings_pref_provider.h
+++ /dev/null
@@ -1,126 +0,0 @@
-// 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 CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_
-#define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_
-
-// A content settings provider that takes its settings out of the pref service.
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/prefs/pref_change_registrar.h"
-#include "base/synchronization/lock.h"
-#include "chrome/browser/content_settings/content_settings_utils.h"
-#include "components/content_settings/core/browser/content_settings_observable_provider.h"
-#include "components/content_settings/core/browser/content_settings_origin_identifier_value_map.h"
-
-class PrefService;
-
-namespace base {
-class Clock;
-class DictionaryValue;
-}
-
-namespace user_prefs {
-class PrefRegistrySyncable;
-}
-
-namespace content_settings {
-
-// Content settings provider that provides content settings from the user
-// preference.
-class PrefProvider : public ObservableProvider {
- public:
-  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
-
-  PrefProvider(PrefService* prefs, bool incognito);
-  ~PrefProvider() override;
-
-  // ProviderInterface implementations.
-  RuleIterator* GetRuleIterator(ContentSettingsType content_type,
-                                const ResourceIdentifier& resource_identifier,
-                                bool incognito) const override;
-
-  bool SetWebsiteSetting(const ContentSettingsPattern& primary_pattern,
-                         const ContentSettingsPattern& secondary_pattern,
-                         ContentSettingsType content_type,
-                         const ResourceIdentifier& resource_identifier,
-                         base::Value* value) override;
-
-  void ClearAllContentSettingsRules(ContentSettingsType content_type) override;
-
-  void ShutdownOnUIThread() override;
-
-  // Records the last time the given pattern has used a certain content setting.
-  void UpdateLastUsage(const ContentSettingsPattern& primary_pattern,
-                       const ContentSettingsPattern& secondary_pattern,
-                       ContentSettingsType content_type);
-
-  base::Time GetLastUsage(const ContentSettingsPattern& primary_pattern,
-                          const ContentSettingsPattern& secondary_pattern,
-                          ContentSettingsType content_type);
-
-  // Gains ownership of |clock|.
-  void SetClockForTesting(scoped_ptr<base::Clock> clock);
-
- private:
-  friend class DeadlockCheckerThread;  // For testing.
-  // Reads all content settings exceptions from the preference and load them
-  // into the |value_map_|. The |value_map_| is cleared first if |overwrite| is
-  // true.
-  void ReadContentSettingsFromPref(bool overwrite);
-
-  // Callback for changes in the pref with the same name.
-  void OnContentSettingsPatternPairsChanged();
-
-  // Update the preference that stores content settings exceptions and syncs the
-  // value to the obsolete preference. When calling this function, |lock_|
-  // should not be held, since this function will send out notifications of
-  // preference changes.
-  void UpdatePref(
-      const ContentSettingsPattern& primary_pattern,
-      const ContentSettingsPattern& secondary_pattern,
-      ContentSettingsType content_type,
-      const ResourceIdentifier& resource_identifier,
-      const base::Value* value);
-
-  // Migrate the old media setting into new mic/camera content settings.
-  void MigrateObsoleteMediaContentSetting();
-
-  static void CanonicalizeContentSettingsExceptions(
-      base::DictionaryValue* all_settings_dictionary);
-
-  // In the debug mode, asserts that |lock_| is not held by this thread. It's
-  // ok if some other thread holds |lock_|, as long as it will eventually
-  // release it.
-  void AssertLockNotHeld() const;
-
-  // Weak; owned by the Profile and reset in ShutdownOnUIThread.
-  PrefService* prefs_;
-
-  // Can be set for testing.
-  scoped_ptr<base::Clock> clock_;
-
-  bool is_incognito_;
-
-  PrefChangeRegistrar pref_change_registrar_;
-
-  // Whether we are currently updating preferences, this is used to ignore
-  // notifications from the preferences service that we triggered ourself.
-  bool updating_preferences_;
-
-  OriginIdentifierValueMap value_map_;
-
-  OriginIdentifierValueMap incognito_value_map_;
-
-  // Used around accesses to the value map objects to guarantee thread safety.
-  mutable base::Lock lock_;
-
-  DISALLOW_COPY_AND_ASSIGN(PrefProvider);
-};
-
-}  // namespace content_settings
-
-#endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_