Show a notification when a braille display is connected.

chrome/browser/extensions/api/braille_display_private/mock_braille_controller.h

+// Copyright 2014 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_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_MOCK_BRAILLE_CONTROLLER_H_
+#define CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_MOCK_BRAILLE_CONTROLLER_H_
+
+#include "chrome/browser/extensions/api/braille_display_private/stub_braille_controller.h"
+
+namespace extensions {
+namespace api {
+namespace braille_display_private {
+
+// Mock implementation of the BrailleController interface.
+class MockBrailleController : public StubBrailleController {
+ public:
+  MockBrailleController();
+
+  virtual scoped_ptr<DisplayState> GetDisplayState() OVERRIDE;
+  virtual void AddObserver(BrailleObserver* observer) OVERRIDE;
+  virtual void RemoveObserver(BrailleObserver* observer) OVERRIDE;
+
+  // Sets the available flag without calling the observer.
+  void SetAvailable(bool available);
+  BrailleObserver* GetObserver() const;
+
+ private:
+  bool available_;
+  BrailleObserver* observer_;
+};
+
+}  // namespace braille_display_private
+}  // namespace api
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_MOCK_BRAILLE_CONTROLLER_H_