Remove extension-to-component migration mechanism

chrome/browser/ui/toolbar/component_toolbar_actions_factory.h

Index: chrome/browser/ui/toolbar/component_toolbar_actions_factory.h
diff --git a/chrome/browser/ui/toolbar/component_toolbar_actions_factory.h b/chrome/browser/ui/toolbar/component_toolbar_actions_factory.h
index 3f00ca9c1d0f53b37bf12b5b59da8bfb5deabfdb..7768b7db6eff8c9730aeab98e1df927f0264d65a 100644
--- a/chrome/browser/ui/toolbar/component_toolbar_actions_factory.h
+++ b/chrome/browser/ui/toolbar/component_toolbar_actions_factory.h
@@ -16,10 +16,6 @@ class Browser;
 class Profile;
 class ToolbarActionViewController;
 
-namespace extensions {
-class ComponentMigrationHelper;
-}  // extensions
-
 // The registry for all component toolbar actions. Component toolbar actions
 // are actions that live in the toolbar (like extension actions), but are
 // components of chrome, such as ChromeCast.
@@ -43,15 +39,6 @@ class ComponentToolbarActionsFactory {
                                  Browser* browser,
                                  ToolbarActionsBar* bar);
 
-  // Registers component actions that are migrating from extensions.
-  virtual void RegisterComponentMigrations(
-      extensions::ComponentMigrationHelper* helper) const;
-
-  // Synchronizes component action visibility and extension install status.
-  virtual void HandleComponentMigrations(
-      extensions::ComponentMigrationHelper* helper,
-      Profile* profile) const;
-
   // Sets the factory to use for testing purposes.
   // Ownership remains with the caller.
   static void SetTestingFactory(ComponentToolbarActionsFactory* factory);