Move content_settings_custom_extension_provider.* to c/b/extensions/api/content_settings/

chrome/browser/content_settings/content_settings_custom_extension_provider.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 CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_CUSTOM_EXTENSION_PROVIDER_H_
-#define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_CUSTOM_EXTENSION_PROVIDER_H_
-
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "chrome/browser/extensions/api/content_settings/content_settings_store.h"
-#include "components/content_settings/core/browser/content_settings_observable_provider.h"
-
-namespace content_settings {
-
-// A content settings provider which manages settings defined by extensions.
-class CustomExtensionProvider : public ObservableProvider,
-                          public extensions::ContentSettingsStore::Observer {
- public:
-  CustomExtensionProvider(const scoped_refptr<extensions::ContentSettingsStore>&
-                              extensions_settings,
-                          bool incognito);
-
-  ~CustomExtensionProvider() override;
-
-  // ProviderInterface methods:
-  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;
-
-  // extensions::ContentSettingsStore::Observer methods:
-  void OnContentSettingChanged(const std::string& extension_id,
-                               bool incognito) override;
-
- private:
-  // Specifies whether this provider manages settings for incognito or regular
-  // sessions.
-  bool incognito_;
-
-  // The backend storing content setting rules defined by extensions.
-  scoped_refptr<extensions::ContentSettingsStore> extensions_settings_;
-
-  DISALLOW_COPY_AND_ASSIGN(CustomExtensionProvider);
-};
-
-}  // namespace content_settings
-
-#endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_CUSTOM_EXTENSION_PROVIDER_H_