Update iOS AppRTCDemo to use the updated Objective-C API.

webrtc/examples/objc/AppRTCDemo/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.
  */
 
 #import "ARDUtilities.h"
 
 #import <mach/mach.h>
 
-#import "RTCLogging.h"
+#import "webrtc/base/objc/RTCLogging.h"
 
 @implementation NSDictionary (ARDUtilites)
 
 + (NSDictionary *)dictionaryWithJSONString:(NSString *)jsonString {
   NSParameterAssert(jsonString.length > 0);
   NSData *data = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
   NSError *error = nil;
   NSDictionary *dict =
       [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
   if (error) {
@@ skipping 93 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);
 }