Migrate (Network)ErrorScreen to ScreenContext

chrome/browser/chromeos/login/screens/network_error.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_H_
+
+namespace chromeos {
+
+class NetworkError {
+ public:
+  enum UIState {
+    UI_STATE_UNKNOWN = 0,
+    UI_STATE_UPDATE,
+    UI_STATE_SIGNIN,
+    UI_STATE_SUPERVISED,
+    UI_STATE_KIOSK_MODE,
+    UI_STATE_LOCAL_STATE_ERROR,
+    UI_STATE_AUTO_ENROLLMENT_ERROR,
+    UI_STATE_ROLLBACK_ERROR,
+  };
+
+  enum ErrorState {
+    ERROR_STATE_UNKNOWN = 0,
+    ERROR_STATE_PORTAL,
+    ERROR_STATE_OFFLINE,
+    ERROR_STATE_PROXY,
+    ERROR_STATE_AUTH_EXT_TIMEOUT,
+    ERROR_STATE_NONE,
+    // States above are being logged to histograms.
+    // Please keep ERROR_STATE_NONE as the last one of the histogram values.
+    // ERROR_STATE_KIOSK_ONLINE is a special case (not an actual error) and is
+    // not reported in histogram.
+    ERROR_STATE_KIOSK_ONLINE,
+  };
+
+  // Possible network error reasons.
+  enum ErrorReason {
+    ERROR_REASON_PROXY_AUTH_CANCELLED = 0,
+    ERROR_REASON_PROXY_AUTH_SUPPLIED,
+    ERROR_REASON_PROXY_CONNECTION_FAILED,
+    ERROR_REASON_PROXY_CONFIG_CHANGED,
+    ERROR_REASON_LOADING_TIMEOUT,
+    ERROR_REASON_PORTAL_DETECTED,
+    // Reason for a case when default network has changed.
+    ERROR_REASON_NETWORK_STATE_CHANGED,
+    // Reason for a case when JS side requires error screen update.
+    ERROR_REASON_UPDATE,
+    ERROR_REASON_FRAME_ERROR
+  };
+
+  static const char* ErrorReasonString(ErrorReason reason);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_NETWORK_ERROR_H_