1 files changed, 23 insertions, 0 deletions
diff --git a/chromium/ui/accessibility/ax_mode_observer.h b/chromium/ui/accessibility/ax_mode_observer.h
new file mode 100644
index 00000000000..c1fa63c9129
--- /dev/null
+++ b/chromium/ui/accessibility/ax_mode_observer.h
@@ -0,0 +1,23 @@
+// Copyright 2017 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 UI_ACCESSIBILITY_PLATFORM_AX_MODE_OBSERVER_H_
+#define UI_ACCESSIBILITY_PLATFORM_AX_MODE_OBSERVER_H_
+
+#include "ui/accessibility/ax_export.h"
+#include "ui/accessibility/ax_modes.h"
+
+namespace ui {
+
+class AX_EXPORT AXModeObserver {
+ public:
+  virtual ~AXModeObserver() {}
+
+  // Notifies when accessibility mode changes.
+  virtual void OnAXModeAdded(ui::AXMode mode) = 0;
+};
+
+}  // namespace ui
+
+#endif  // UI_ACCESSIBILITY_PLATFORM_AX_MODE_OBSERVER_H_
+\ No newline at end of file