[ObjC ARC] Converts ios/chrome/browser/ui/voice:voice to ARC.Automatically generated ARCMigrate c…

ios/chrome/browser/ui/voice/text_to_speech_player.mm

 // 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.
 
 #import "ios/chrome/browser/ui/voice/text_to_speech_player.h"
 
 #import <AVFoundation/AVFoundation.h>
 #import <UIKit/UIKit.h>
 
 #import "base/mac/scoped_nsobject.h"
 #import "ios/chrome/browser/ui/voice/text_to_speech_player+subclassing.h"
 #import "ios/chrome/browser/ui/voice/voice_search_notification_names.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 @interface TextToSpeechPlayer ()<AVAudioPlayerDelegate> {
   // The audio data to be played.
   base::scoped_nsobject<NSData> _audioData;
   // The AVAudioPlayer playing TTS audio data.
   base::scoped_nsobject<AVAudioPlayer> _player;
   // Whether playback has finished.
   BOOL _playbackFinished;
 }
 
 // Cancels TTS audio playback, and sends a kTTSDidStopPlayingNotification
@@ skipping 13 matching lines @@
                                              selector:handler
                                                  name:notificationName
                                                object:sender];
   }
   return self;
 }
 
 - (void)dealloc {
   [[NSNotificationCenter defaultCenter] removeObserver:self];
   [self cancelPlayback];
-  [super dealloc];
 }
 
 #pragma mark - Accessors
 
 - (BOOL)isReadyForPlayback {
   return [_audioData length] > 0;
 }
 
 - (BOOL)isPlayingAudio {
   return [_player isPlaying];
 }
 
 - (AVAudioPlayer*)player {
   return _player;
 }
 
 #pragma mark - Public
 
 - (void)prepareToPlayAudioData:(NSData*)audioData {
   if (self.playingAudio)
     [self cancelPlayback];
-  _audioData.reset([audioData retain]);
+  _audioData.reset(audioData);
   [[NSNotificationCenter defaultCenter]
       postNotificationName:kTTSAudioReadyForPlaybackNotification
                     object:self];
 }
 
 - (void)beginPlayback {
   // no-op when audio is already playing.
   if (self.playingAudio || !self.readyForPlayback)
     return;
   // Create the AVAudioPlayer and initiate playback.
@@ skipping 42 matching lines @@
   [_player setDelegate:nil];
   _player.reset();
   if (sendNotification) {
     [[NSNotificationCenter defaultCenter]
         postNotificationName:kTTSDidStopPlayingNotification
                       object:self];
   }
 }
 
 @end