1 files changed, 39 insertions, 0 deletions
diff --git a/chromium/ash/display/display_error_observer_chromeos.h b/chromium/ash/display/display_error_observer_chromeos.h
new file mode 100644
index 00000000000..b8bb1c1ea3b
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+++ b/chromium/ash/display/display_error_observer_chromeos.h
@@ -0,0 +1,39 @@
+// Copyright 2013 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 ASH_DISPLAY_DISPLAY_ERROR_OBSERVER_CHROMEOS_H_
+#define ASH_DISPLAY_DISPLAY_ERROR_OBSERVER_CHROMEOS_H_
+
+#include "ash/ash_export.h"
+#include "base/compiler_specific.h"
+#include "base/strings/string16.h"
+#include "chromeos/display/output_configurator.h"
+
+namespace ash {
+namespace internal {
+
+// The class to observe the output failures and shows the error dialog when
+// necessary.
+class ASH_EXPORT DisplayErrorObserver
+    : public chromeos::OutputConfigurator::Observer {
+ public:
+  DisplayErrorObserver();
+  virtual ~DisplayErrorObserver();
+
+  // chromeos::OutputConfigurator::Observer overrides:
+  virtual void OnDisplayModeChangeFailed(
+      chromeos::OutputState failed_new_state) OVERRIDE;
+
+ private:
+  friend class DisplayErrorObserverTest;
+
+  base::string16 GetTitleOfDisplayErrorNotificationForTest();
+
+  DISALLOW_COPY_AND_ASSIGN(DisplayErrorObserver);
+};
+
+}  // namespace internal
+}  // namespace ash
+
+#endif  // ASH_DISPLAY_DISPLAY_ERROR_OBSERVER_CHROMEOS_H_