[ios] Adds support for parsing Text-to-Speech search results.

ios/chrome/browser/ui/voice/voice_search_notification_names.h

+// Copyright 2016 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 IOS_CHROME_BROWSER_UI_VOICE_VOICE_SEARCH_NOTIFICATION_NAMES_H_
+#define IOS_CHROME_BROWSER_UI_VOICE_VOICE_SEARCH_NOTIFICATION_NAMES_H_
+
+#import <Foundation/Foundation.h>
+
+// Voice Search UI notifications.
+
+// Notification when the Voice Search UI is displayed.
+extern NSString* const kVoiceSearchWillShowNotification;
+// Notification when the Voice Search UI is dismissed.
+extern NSString* const kVoiceSearchWillHideNotification;
+
+// Text-To-Speech notifications.  The sending objects for these notifications
+// are the TextToSpeechPlayers handling playback.
+
+// Notification when TTS audio data is prepared for playback.
+extern NSString* const kTTSAudioReadyForPlaybackNotification;
+// Notification when TTS starts playing.
+extern NSString* const kTTSWillStartPlayingNotification;
+// Notification when TTS stops playing.
+extern NSString* const kTTSDidStopPlayingNotification;
+
+// VoiceSearchBar notifications.
+
+// Notification when a VoiceSearchBar button is selected.
+extern NSString* const kVoiceSearchBarViewButtonSelectedNotification;
+// Notification when a VoiceSearchBar button is deselected.
+extern NSString* const kVoiceSearchBarViewButtonDeselectedNotification;
+
+#endif  // IOS_CHROME_BROWSER_UI_VOICE_VOICE_SEARCH_NOTIFICATION_NAMES_H_