[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

Index: ios/chrome/browser/ui/voice/text_to_speech_player.mm
diff --git a/ios/chrome/browser/ui/voice/text_to_speech_player.mm b/ios/chrome/browser/ui/voice/text_to_speech_player.mm
index 184b1b00350c3432a1b9b95a383c4b16d9dd1cd7..ade4fa44692f0eb1665856ffe2d608e385eecb39 100644
--- a/ios/chrome/browser/ui/voice/text_to_speech_player.mm
+++ b/ios/chrome/browser/ui/voice/text_to_speech_player.mm
@@ -11,6 +11,10 @@
 #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;
@@ -44,7 +48,6 @@
 - (void)dealloc {
   [[NSNotificationCenter defaultCenter] removeObserver:self];
   [self cancelPlayback];
-  [super dealloc];
 }
 
 #pragma mark - Accessors
@@ -66,7 +69,7 @@
 - (void)prepareToPlayAudioData:(NSData*)audioData {
   if (self.playingAudio)
     [self cancelPlayback];
-  _audioData.reset([audioData retain]);
+  _audioData.reset(audioData);
   [[NSNotificationCenter defaultCenter]
       postNotificationName:kTTSAudioReadyForPlaybackNotification
                     object:self];