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

ios/chrome/browser/voice/text_to_speech_listener.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/voice/text_to_speech_listener.h"
 
 #include <memory>
 
-#include "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #include "base/mac/scoped_nsobject.h"
+#include "base/memory/ptr_util.h"
 #include "ios/web/public/navigation_manager.h"
 #include "ios/web/public/web_state/web_state.h"
 #include "ios/web/public/web_state/web_state_observer.h"
 #import "ios/chrome/browser/voice/text_to_speech_parser.h"
 #import "ios/chrome/browser/voice/voice_search_url_rewriter.h"
 #include "url/gurl.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 #pragma mark - TextToSpeechListener Private Interface
 
 class TextToSpeechWebStateObserver;
 
 @interface TextToSpeechListener ()
 
 // The TextToSpeechListenerDelegate passed on initialization.
-@property(nonatomic, readonly) id<TextToSpeechListenerDelegate> delegate;
+@property(weak, nonatomic, readonly) id<TextToSpeechListenerDelegate> delegate;
 
 @end
 
 #pragma mark - TextToSpeechWebStateObserver
 
 class TextToSpeechWebStateObserver : public web::WebStateObserver {
  public:
   TextToSpeechWebStateObserver(web::WebState* web_state,
                                TextToSpeechListener* listener);
   ~TextToSpeechWebStateObserver() override;
@@ skipping 19 matching lines @@
 }
 
 TextToSpeechWebStateObserver::~TextToSpeechWebStateObserver() {}
 
 void TextToSpeechWebStateObserver::PageLoaded(
     web::PageLoadCompletionStatus load_completion_status) {
   const GURL& url = web_state()->GetLastCommittedURL();
   BOOL shouldParse = [listener_.delegate shouldTextToSpeechListener:listener_
                                                    parseDataFromURL:url];
   if (shouldParse) {
-    base::WeakNSObject<TextToSpeechListener> weakListener(listener_);
+    __weak TextToSpeechListener* weakListener = listener_;
     ExtractVoiceSearchAudioDataFromWebState(web_state(), ^(NSData* audioData) {
       [[weakListener delegate] textToSpeechListener:weakListener
                                    didReceiveResult:audioData];
     });
   } else {
     [listener_.delegate textToSpeechListener:listener_ didReceiveResult:nil];
   }
 }
 
 void TextToSpeechWebStateObserver::WebStateDestroyed() {
   [listener_.delegate textToSpeechListenerWebStateWasDestroyed:listener_];
 }
 
 #pragma mark - TextToSpeechListener
-
 @implementation TextToSpeechListener {
-  // Backing object for property of the same name.
-  base::WeakNSProtocol<id<TextToSpeechListenerDelegate>> _delegate;
   // The TextToSpeechWebStateObserver that listens for Text-To-Speech data.
   std::unique_ptr<TextToSpeechWebStateObserver> _webStateObserver;
 }
+@synthesize delegate = _delegate;
 
 - (instancetype)initWithWebState:(web::WebState*)webState
                         delegate:(id<TextToSpeechListenerDelegate>)delegate {
   if ((self = [super init])) {
     DCHECK(webState);
     DCHECK(delegate);
-    _webStateObserver.reset(new TextToSpeechWebStateObserver(webState, self));
-    _delegate.reset(delegate);
+    _webStateObserver =
+        base::MakeUnique<TextToSpeechWebStateObserver>(webState, self);
+    _delegate = delegate;
   }
   return self;
 }
 
 #pragma mark Accessors
 
 - (web::WebState*)webState {
   return _webStateObserver->web_state();
 }
 
-- (id<TextToSpeechListenerDelegate>)delegate {
-  return _delegate.get();
-}
-
 @end