Add stubs for brailleDisplayPrivate extension API.

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

+// Copyright (c) 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.
+
+#include "chrome/browser/extensions/api/braille_display_private/braille_display_private_api.h"
+
+#include "base/lazy_instance.h"
+#include "chrome/browser/extensions/event_router.h"
+#include "chrome/browser/extensions/extension_system.h"
+
+namespace WriteDots = extensions::api::braille_display_private::WriteDots;

[David Tseng, 2013/09/03 23:57:17]

nit: sort.

+namespace OnKeyEvent = extensions::api::braille_display_private::OnKeyEvent;
+using extensions::api::braille_display_private::KeyEvent;
+
+namespace extensions {
+BrailleDisplayPrivateAPI::BrailleDisplayPrivateAPI(Profile* profile)
+    : profile_(profile) {
+}
+
+BrailleDisplayPrivateAPI::~BrailleDisplayPrivateAPI() {
+}
+
+void BrailleDisplayPrivateAPI::Shutdown() {
+}
+
+static base::LazyInstance<ProfileKeyedAPIFactory<BrailleDisplayPrivateAPI> >
+g_factory = LAZY_INSTANCE_INITIALIZER;
+
+// static
+ProfileKeyedAPIFactory<BrailleDisplayPrivateAPI>*
+BrailleDisplayPrivateAPI::GetFactoryInstance() {
+  return &g_factory.Get();
+}
+
+namespace api {
+bool BrailleDisplayPrivateGetDisplayStateFunction::Prepare() {
+  return true;
+}
+
+void BrailleDisplayPrivateGetDisplayStateFunction::Work() {
+  // TODO(plundblad): implement.
+}
+
+bool BrailleDisplayPrivateGetDisplayStateFunction::Respond() {
+  return false;
+}
+
+BrailleDisplayPrivateWriteDotsFunction::
+BrailleDisplayPrivateWriteDotsFunction() {
+}
+
+BrailleDisplayPrivateWriteDotsFunction::
+~BrailleDisplayPrivateWriteDotsFunction() {
+}
+
+bool BrailleDisplayPrivateWriteDotsFunction::Prepare() {
+  params_ = WriteDots::Params::Create(*args_);
+  EXTENSION_FUNCTION_VALIDATE(params_);
+  return true;
+}
+
+void BrailleDisplayPrivateWriteDotsFunction::Work() {
+  // TODO(plundblad): Implement.
+}
+
+bool BrailleDisplayPrivateWriteDotsFunction::Respond() {
+  return true;
+}
+}  // namespace api
+}  // namespace extensions