Refactoring of SessionService to get componentized.

chrome/browser/sessions/base_session_service_commands.h

+// 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_SESSIONS_BASE_SESSION_SERVICE_COMMANDS_H_
+#define CHROME_BROWSER_SESSIONS_BASE_SESSION_SERVICE_COMMANDS_H_
+
+#include <string>
+
+#include "components/sessions/session_id.h"
+
+class SessionCommand;
+
+namespace sessions {
+class SerializedNavigationEntry;
+}
+
+// These commands create and read common base commands for SessionService and
+// PersistentTabRestoreService.
+// TODO(skuhne): Make ownership cleaner by using scoped_ptr's for return values.
+
+// Creates a SessionCommand that represents a navigation.
+SessionCommand* CreateUpdateTabNavigationCommand(
+    SessionID::id_type command_id,
+    SessionID::id_type tab_id,
+    const sessions::SerializedNavigationEntry& navigation);
+
+// Creates a SessionCommand that represents marking a tab as an application.
+SessionCommand* CreateSetTabExtensionAppIDCommand(
+    SessionID::id_type command_id,
+    SessionID::id_type tab_id,
+    const std::string& extension_id);
+
+// Creates a SessionCommand that containing user agent override used by a
+// tab's navigations.
+SessionCommand* CreateSetTabUserAgentOverrideCommand(
+    SessionID::id_type command_id,
+    SessionID::id_type tab_id,
+    const std::string& user_agent_override);
+
+// Creates a SessionCommand stores a browser window's app name.
+SessionCommand* CreateSetWindowAppNameCommand(SessionID::id_type command_id,
+                                              SessionID::id_type window_id,
+                                              const std::string& app_name);
+
+// Converts a SessionCommand previously created by
+// CreateUpdateTabNavigationCommand into a
+// sessions::SerializedNavigationEntry. Returns true on success. If
+// successful |tab_id| is set to the id of the restored tab.
+bool RestoreUpdateTabNavigationCommand(
+    const SessionCommand& command,
+    sessions::SerializedNavigationEntry* navigation,
+    SessionID::id_type* tab_id);
+
+// Extracts a SessionCommand as previously created by
+// CreateSetTabExtensionAppIDCommand into the tab id and application
+// extension id.
+bool RestoreSetTabExtensionAppIDCommand(const SessionCommand& command,
+                                        SessionID::id_type* tab_id,
+                                        std::string* extension_app_id);
+
+// Extracts a SessionCommand as previously created by
+// CreateSetTabUserAgentOverrideCommand into the tab id and user agent.
+bool RestoreSetTabUserAgentOverrideCommand(const SessionCommand& command,
+                                           SessionID::id_type* tab_id,
+                                           std::string* user_agent_override);
+
+// Extracts a SessionCommand as previously created by
+// CreateSetWindowAppNameCommand into the window id and application name.
+bool RestoreSetWindowAppNameCommand(const SessionCommand& command,
+                                    SessionID::id_type* window_id,
+                                    std::string* app_name);
+
+#endif  // CHROME_BROWSER_SESSIONS_BASE_SESSION_SERVICE_COMMANDS_H_