cros: Move call js prefix out of ctor.

chrome/browser/ui/webui/chromeos/login/app_launch_splash_screen_handler.cc

Index: chrome/browser/ui/webui/chromeos/login/app_launch_splash_screen_handler.cc
diff --git a/chrome/browser/ui/webui/chromeos/login/app_launch_splash_screen_handler.cc b/chrome/browser/ui/webui/chromeos/login/app_launch_splash_screen_handler.cc
index bf074962c02865038fed196ab002db9918c9cad6..5dcdd4fcb997ecbd85e98e1ec3268b46a6f8aa37 100644
--- a/chrome/browser/ui/webui/chromeos/login/app_launch_splash_screen_handler.cc
+++ b/chrome/browser/ui/webui/chromeos/login/app_launch_splash_screen_handler.cc
@@ -39,9 +39,9 @@ namespace chromeos {
 AppLaunchSplashScreenHandler::AppLaunchSplashScreenHandler(
     const scoped_refptr<NetworkStateInformer>& network_state_informer,
     ErrorScreen* error_screen)
-    : BaseScreenHandler(kJsScreenPath),
-      network_state_informer_(network_state_informer),
+    : network_state_informer_(network_state_informer),
       error_screen_(error_screen) {
+  set_call_js_prefix(kJsScreenPath);
   network_state_informer_->AddObserver(this);
 }