Componentize HostContentSettingsMap and content settings providers.

chrome/browser/content_settings/content_settings_default_provider.h

Index: chrome/browser/content_settings/content_settings_default_provider.h
diff --git a/chrome/browser/content_settings/content_settings_default_provider.h b/chrome/browser/content_settings/content_settings_default_provider.h
deleted file mode 100644
index 8163e8ded494713596ceca01fc5f3130698663ec..0000000000000000000000000000000000000000
--- a/chrome/browser/content_settings/content_settings_default_provider.h
+++ /dev/null
@@ -1,92 +0,0 @@
-// Copyright (c) 2011 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_DEFAULT_PROVIDER_H_
-#define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_DEFAULT_PROVIDER_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/memory/linked_ptr.h"
-#include "base/prefs/pref_change_registrar.h"
-#include "base/synchronization/lock.h"
-#include "components/content_settings/core/browser/content_settings_observable_provider.h"
-
-class PrefService;
-
-namespace user_prefs {
-class PrefRegistrySyncable;
-}
-
-namespace content_settings {
-
-// Provider that provides default content settings based on
-// user prefs. If no default values are set by the user we use the hard coded
-// default values.
-class DefaultProvider : public ObservableProvider {
- public:
-  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
-
-  DefaultProvider(PrefService* prefs,
-                  bool incognito);
-  ~DefaultProvider() 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;
-
- private:
-  // Sets the fields of |settings| based on the values in |dictionary|.
-  void GetSettingsFromDictionary(const base::DictionaryValue* dictionary);
-
-  // Forces the default settings to be explicitly set instead of themselves
-  // being CONTENT_SETTING_DEFAULT.
-  void ForceDefaultsToBeExplicit();
-
-  // Reads the default settings from the preferences service. If |overwrite| is
-  // true and the preference is missing, the local copy will be cleared as well.
-  void ReadDefaultSettings(bool overwrite);
-
-  // Called on prefs change.
-  void OnPreferenceChanged(const std::string& pref_name);
-
-  typedef linked_ptr<base::Value> ValuePtr;
-  typedef std::map<ContentSettingsType, ValuePtr> ValueMap;
-  // Copies of the pref data, so that we can read it on the IO thread.
-  ValueMap default_settings_;
-
-  PrefService* prefs_;
-
-  // Whether this settings map is for an Incognito session.
-  bool is_incognito_;
-
-  // Used around accesses to the |default_content_settings_| object to guarantee
-  // thread safety.
-  mutable base::Lock lock_;
-
-  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_;
-
-  DISALLOW_COPY_AND_ASSIGN(DefaultProvider);
-};
-
-}  // namespace content_settings
-
-#endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_DEFAULT_PROVIDER_H_