Migrates legacy packaged app data when it's upgraded to a platform app

chrome/browser/extensions/extension_service.h

Index: chrome/browser/extensions/extension_service.h
diff --git a/chrome/browser/extensions/extension_service.h b/chrome/browser/extensions/extension_service.h
index 556adb0025afdec9c42b162005a9cf4879179df8..6c736d7ed91b5093183f15b6ab4b116137beb66a 100644
--- a/chrome/browser/extensions/extension_service.h
+++ b/chrome/browser/extensions/extension_service.h
@@ -51,6 +51,7 @@ class DevToolsAgentHost;
 }
 
 namespace extensions {
+class AppDataMigrator;
 class ComponentLoader;
 class CrxInstaller;
 class ExtensionActionStorageManager;
@@ -718,6 +719,9 @@ class ExtensionService
 
   ObserverList<extensions::UpdateObserver, true> update_observers_;
 
+  // Migrates app data when upgrading a legacy packaged app to a platform app
+  scoped_ptr<extensions::AppDataMigrator> app_data_migrator_;
+
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest,
                            DestroyingProfileClearsExtensions);
   FRIEND_TEST_ALL_PREFIXES(ExtensionServiceTest, SetUnsetBlacklistInPrefs);