Add a tray notification UI for speech input recording in the extension API.

chrome/common/pref_names.h

 // Copyright (c) 2011 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.
 
 // Constants for the names of various preferences, for easier changing.
 
 #ifndef CHROME_COMMON_PREF_NAMES_H_
 #define CHROME_COMMON_PREF_NAMES_H_
 #pragma once
 
@@ skipping 207 matching lines @@
 extern const char kShowHomeButton[];
 extern const char kRecentlySelectedEncoding[];
 extern const char kDeleteBrowsingHistory[];
 extern const char kDeleteDownloadHistory[];
 extern const char kDeleteCache[];
 extern const char kDeleteCookies[];
 extern const char kDeletePasswords[];
 extern const char kDeleteFormData[];
 extern const char kEnableSpellCheck[];
 extern const char kSpeechInputFilterProfanities[];
+extern const char kSpeechInputTrayNotificationShown[];
 extern const char kEnabledLabsExperiments[];
 extern const char kEnableAutoSpellCorrect[];
 extern const char kSavingBrowserHistoryDisabled[];
 extern const char kDeleteTimePeriod[];
 extern const char kPrintingEnabled[];
 #if defined(GOOGLE_CHROME_BUILD)
 extern const char kPrintingPrintPreviewEnabledOnce[];
 #endif
 #if defined(TOOLKIT_USES_GTK)
 extern const char kUsesSystemTheme[];
@@ skipping 368 matching lines @@
 
 extern const char kDevicePolicyRefreshRate[];
 extern const char kUserPolicyRefreshRate[];
 
 extern const char kRecoveryComponentVersion[];
 extern const char kComponentUpdaterState[];
 
 }  // namespace prefs
 
 #endif  // CHROME_COMMON_PREF_NAMES_H_