Fix deprecated methods in AppRTCMobile.

webrtc/examples/objc/AppRTCMobile/common/ARDUtilities.m

 /*
  *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 29 matching lines @@
 
 @end
 
 @implementation NSURLConnection (ARDUtilities)
 
 + (void)sendAsyncRequest:(NSURLRequest *)request
        completionHandler:(void (^)(NSURLResponse *response,
                                    NSData *data,
                                    NSError *error))completionHandler {
   // Kick off an async request which will call back on main thread.
-  [NSURLConnection sendAsynchronousRequest:request
-                                     queue:[NSOperationQueue mainQueue]
-                         completionHandler:^(NSURLResponse *response,
-                                             NSData *data,
-                                             NSError *error) {
-    if (completionHandler) {
-      completionHandler(response, data, error);
-    }
-  }];
+  NSURLSession *session = [NSURLSession sharedSession];
+  [[session dataTaskWithRequest:request
+              completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
+                if (completionHandler) {
+                  completionHandler(response, data, error);
+                }
+              }] resume];
 }
 
 // Posts data to the specified URL.
 + (void)sendAsyncPostToURL:(NSURL *)url
                   withData:(NSData *)data
          completionHandler:(void (^)(BOOL succeeded,
                                      NSData *data))completionHandler {
   NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
   request.HTTPMethod = @"POST";
   request.HTTPBody = data;
@@ skipping 50 matching lines @@
       cpu_usage_percentage +=
           100.f * (float)thread_info_data.cpu_usage / TH_USAGE_SCALE;
     }
   }
 
   // Dealloc the created array.
   vm_deallocate(task, (vm_address_t)thread_array,
                 sizeof(thread_act_t) * thread_count);
   return lroundf(cpu_usage_percentage);
 }