Componentize HostContentSettingsMap and content settings providers.

chrome/browser/content_settings/content_settings_override_provider.h

Index: chrome/browser/content_settings/content_settings_override_provider.h
diff --git a/chrome/browser/content_settings/content_settings_override_provider.h b/chrome/browser/content_settings/content_settings_override_provider.h
deleted file mode 100644
index 9fd659848668bd245f57f85c963e5d5cb17d1f1a..0000000000000000000000000000000000000000
--- a/chrome/browser/content_settings/content_settings_override_provider.h
+++ /dev/null
@@ -1,79 +0,0 @@
-// Copyright 2014 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_OVERRIDE_PROVIDER_H_
-#define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_OVERRIDE_PROVIDER_H_
-
-#include "base/macros.h"
-#include "base/synchronization/lock.h"
-#include "base/threading/thread_checker.h"
-#include "components/content_settings/core/browser/content_settings_provider.h"
-#include "components/content_settings/core/common/content_settings_types.h"
-
-class ContentSettingsPattern;
-class PrefService;
-
-namespace user_prefs {
-class PrefRegistrySyncable;
-}
-
-namespace content_settings {
-
-// OverrideProvider contains if certain content settings are enabled or
-// globally disabled. It may only be written to using the UI thread, but may be
-// read on any thread.
-class OverrideProvider : public ProviderInterface {
- public:
-  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
-
-  OverrideProvider(PrefService* prefs, bool incognito);
-  ~OverrideProvider() override;
-
-  // ProviderInterface implementations.
-  RuleIterator* GetRuleIterator(ContentSettingsType content_type,
-                                const ResourceIdentifier& resource_identifier,
-                                bool incognito) const override;
-
-  void ClearAllContentSettingsRules(ContentSettingsType content_type) override;
-
-  bool SetWebsiteSetting(const ContentSettingsPattern& primary_pattern,
-                         const ContentSettingsPattern& secondary_pattern,
-                         ContentSettingsType content_type,
-                         const ResourceIdentifier& resource_identifier,
-                         base::Value* value) override;
-
-  void ShutdownOnUIThread() override;
-
-  // Sets if a given |content_type| is |enabled|.
-  void SetOverrideSetting(ContentSettingsType content_type, bool enabled);
-
-  // Returns if |content_type| is enabled. If it is not enabled, the content
-  // setting type is considered globally disabled and acts as though it is
-  // blocked. If it is enabled, the content setting type's permission is granted
-  // by the other providers.
-  bool IsEnabled(ContentSettingsType content_type) const;
-
- private:
-  // Reads the override settings from the preferences service.
-  void ReadOverrideSettings();
-
-  // Copies of the pref data, so that we can read it on the IO thread.
-  bool allowed_settings_[CONTENT_SETTINGS_NUM_TYPES];
-
-  PrefService* prefs_;
-
-  bool is_incognito_;
-
-  // Used around accesses to the |override_content_settings_| object to
-  // guarantee thread safety.
-  mutable base::Lock lock_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(OverrideProvider);
-};
-
-}  // namespace content_settings
-
-#endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_OVERRIDE_PROVIDER_H_