[ObjC ARC] Converts ios/net to ARC.

ios/net/crn_http_protocol_handler.mm

 // Copyright 2012 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/net/crn_http_protocol_handler.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 22 matching lines @@
 #include "net/base/load_flags.h"
 #import "net/base/mac/url_conversions.h"
 #include "net/base/net_errors.h"
 #include "net/base/upload_bytes_element_reader.h"
 #include "net/http/http_request_headers.h"
 #include "net/url_request/redirect_info.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace net {
 class HttpProtocolHandlerCore;
 }
 
 namespace {
 
 // Size of the buffer used to read the net::URLRequest.
 const int kIOBufferSize = 4096;
 
 // Global instance of the HTTPProtocolHandlerDelegate.
@@ skipping 491 matching lines @@
   }
 
   if (tracker_)
     tracker_->CaptureReceivedBytes(request, total_byte_read);
 
   // Notify the client.
   if (bytes_read == net::OK || bytes_read == net::ERR_IO_PENDING) {
     if ([data length] > 0) {
       // If the data is not encoded in UTF8, the NSString is nil.
       DVLOG(3) << "To client:" << std::endl
-               << base::SysNSStringToUTF8([[[NSString alloc]
+               << base::SysNSStringToUTF8([[NSString alloc]
                       initWithData:data
-                          encoding:NSUTF8StringEncoding] autorelease]);
+                          encoding:NSUTF8StringEncoding]);
       [top_level_client_ didLoadData:data];
     }
     if (bytes_read == 0) {
       DCHECK_EQ(net_request_, request);
       // There is nothing more to read.
       StopNetRequest();
       [top_level_client_ didFinishLoading];
     }
   } else {
     // Request failed (not canceled).
@@ skipping 490 matching lines @@
 // (CRNHTTPProtocolHandler) because it is convenient.
 @implementation CRNPauseableHTTPProtocolHandler {
   BOOL _started;
   dispatch_queue_t _queue;
 }
 
 #pragma mark NSURLProtocol methods
 
 - (void)dealloc {
   [self scheduleCancelRequest];
-  [super dealloc];
 }
 
 #pragma mark NSURLProtocol overrides.
 
 - (void)startLoading {
   if (_started) {
     [[self getProtocolHandlerProxy] resume];
     return;
   }
 
@@ skipping 17 matching lines @@
       [[DeferredCancellation alloc] initWithCore:[self getCore]];
   NSArray* modes = @[ [[NSRunLoop currentRunLoop] currentMode] ];
   [cancellation performSelector:@selector(cancel)
                        onThread:[self getClientThread]
                      withObject:nil
                   waitUntilDone:NO
                           modes:modes];
 }
 
 @end