Migrate (Network)ErrorScreen to ScreenContext

chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
index bbb6bc6847148b043a2eb1c55e288926f3cdc51a..1305a0fda0360d20457018a5e9ba53ea9afc92dc 100644
--- a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
@@ -12,6 +12,7 @@
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/chromeos/login/screens/core_oobe_actor.h"
 #include "chrome/browser/extensions/signin/scoped_gaia_auth_extension.h"
+#include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "chrome/browser/ui/webui/chromeos/login/network_state_informer.h"
 #include "net/base/net_errors.h"
 
@@ -22,6 +23,7 @@ class ConsumerManagementService;
 namespace chromeos {
 
 class SigninScreenHandler;
+class SigninScreenHandlerDelegate;
 
 // A class that's used to specify the way how Gaia should be loaded.
 struct GaiaContext {
@@ -185,7 +187,7 @@ class GaiaScreenHandler : public BaseScreenHandler {
 
   // TODO (ygorshenin@): GaiaScreenHandler should implement
   // NetworkStateInformer::Observer.
-  void UpdateState(ErrorScreenActor::ErrorReason reason);
+  void UpdateState(NetworkError::ErrorReason reason);
 
   // TODO (ygorshenin@): remove this dependency.
   void SetSigninScreenHandler(SigninScreenHandler* handler);