Remove OnOptInChanged callback.

chrome/browser/ui/ash/launcher/launcher_extension_app_updater.cc

Index: chrome/browser/ui/ash/launcher/launcher_extension_app_updater.cc
diff --git a/chrome/browser/ui/ash/launcher/launcher_extension_app_updater.cc b/chrome/browser/ui/ash/launcher/launcher_extension_app_updater.cc
index a779a8da8162f53bbea4358cc6828e10718bf835..5d3945fc9a473e36a6ab97b65501e8c96c5b2f92 100644
--- a/chrome/browser/ui/ash/launcher/launcher_extension_app_updater.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_extension_app_updater.cc
@@ -16,11 +16,6 @@ LauncherExtensionAppUpdater::LauncherExtensionAppUpdater(
     : LauncherAppUpdater(delegate, browser_context) {
   StartObservingExtensionRegistry();
 
-  arc::ArcAuthService* arc_auth_service = arc::ArcAuthService::Get();
-  // ArcAuthService may not be available for some unit tests.
-  if (arc_auth_service)
-    arc_auth_service->AddObserver(this);
-
   ArcAppListPrefs* prefs = ArcAppListPrefs::Get(browser_context);
   if (prefs)
     prefs->AddObserver(this);
@@ -29,10 +24,6 @@ LauncherExtensionAppUpdater::LauncherExtensionAppUpdater(
 LauncherExtensionAppUpdater::~LauncherExtensionAppUpdater() {
   StopObservingExtensionRegistry();
 
-  arc::ArcAuthService* arc_auth_service = arc::ArcAuthService::Get();
-  if (arc_auth_service)
-    arc_auth_service->RemoveObserver(this);
-
   ArcAppListPrefs* prefs = ArcAppListPrefs::Get(browser_context());
   if (prefs)
     prefs->RemoveObserver(this);
@@ -67,15 +58,6 @@ void LauncherExtensionAppUpdater::OnShutdown(
   StopObservingExtensionRegistry();
 }
 
-void LauncherExtensionAppUpdater::OnOptInChanged(
-    arc::ArcAuthService::State state) {
-  if (!chromeos::ProfileHelper::IsPrimaryProfile(
-          Profile::FromBrowserContext(browser_context()))) {
-    return;
-  }
-  UpdateHostedApps();
-}
-
 void LauncherExtensionAppUpdater::OnPackageInstalled(
     const arc::mojom::ArcPackageInfo& package_info) {
   UpdateEquivalentHostedApp(package_info.package_name);