Show a notification when a braille display is connected.

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

Index: chrome/browser/extensions/api/braille_display_private/mock_braille_controller.h
diff --git a/chrome/browser/extensions/api/braille_display_private/mock_braille_controller.h b/chrome/browser/extensions/api/braille_display_private/mock_braille_controller.h
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index 0000000000000000000000000000000000000000..ae66942746f0f498bede8828cb2ce8779bb17603
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+// 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();
+
+ 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_