Implement chrome.brailleDisplayPrivate API

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

 // 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 CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_DISPLAY_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_DISPLAY_PRIVATE_API_H_
 
 #include "chrome/browser/extensions/api/api_function.h"
+#include "chrome/browser/extensions/api/braille_display_private/braille_controller.h"
 #include "chrome/browser/extensions/api/profile_keyed_api_factory.h"
 #include "chrome/common/extensions/api/braille_display_private.h"
 
 namespace extensions {
 
 // Implementation of the chrome.brailleDisplayPrivate API.
-class BrailleDisplayPrivateAPI : public ProfileKeyedAPI {
+class BrailleDisplayPrivateAPI
+    : public ProfileKeyedAPI,
+      api::braille_display_private::BrailleObserver {
  public:
   explicit BrailleDisplayPrivateAPI(Profile* profile);
   virtual ~BrailleDisplayPrivateAPI();
 
   // ProfileKeyedService implementation.
   virtual void Shutdown() OVERRIDE;
 
   // ProfileKeyedAPI implementation.
   static ProfileKeyedAPIFactory<BrailleDisplayPrivateAPI>* GetFactoryInstance();
 
+  // BrailleObserver implementation.
+  virtual void OnKeyEvent(
+      const api::braille_display_private::KeyEvent& keyEvent) OVERRIDE;
+
  private:
   friend class ProfileKeyedAPIFactory<BrailleDisplayPrivateAPI>;
 
   Profile* profile_;
 
   // ProfileKeyedAPI implementation.
   static const char* service_name() {
     return "BrailleDisplayPrivateAPI";
   }
   // Override the default so the service is not created in tests.
@@ skipping 25 matching lines @@
   virtual bool Respond() OVERRIDE;
 
  private:
   scoped_ptr<braille_display_private::WriteDots::Params> params_;
 };
 
 }  // namespace api
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_DISPLAY_PRIVATE_API_H_