Revert of Rename AppRTCDemo on Android and iOS to AppRTCMobile (patchset #2 id:20001 of https://codereview.webrtc.org/2343403002/ )

Reason for revert:
Breaks internal project.

Original issue's description:
> Rename AppRTCDemo on Android and iOS to AppRTCMobile
>
> The purpose is to make it clearer it is a mobile application.
>
> BUG=webrtc:6359
> NOPRESUBMIT=true
>
> Committed: https://crrev.com/d3af58bdab5b25acd62cd816363becc7003d3e5a
> Cr-Commit-Position: refs/heads/master@{#14356}

TBR=sakal@webrtc.org,kthelgason@webrtc.org,tommi@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6359

Review-Url: https://codereview.webrtc.org/2358133003
Cr-Commit-Position: refs/heads/master@{#14358}

webrtc/examples/objc/AppRTCDemo/ARDMessageResponse.m

@@ -0,0 +1,46 @@
+/*
+ *  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 "ARDMessageResponse+Internal.h"
+
+#import "ARDUtilities.h"
+
+static NSString const *kARDMessageResultKey = @"result";
+
+@implementation ARDMessageResponse
+
+@synthesize result = _result;
+
++ (ARDMessageResponse *)responseFromJSONData:(NSData *)data {
+  NSDictionary *responseJSON = [NSDictionary dictionaryWithJSONData:data];
+  if (!responseJSON) {
+    return nil;
+  }
+  ARDMessageResponse *response = [[ARDMessageResponse alloc] init];
+  response.result =
+      [[self class] resultTypeFromString:responseJSON[kARDMessageResultKey]];
+  return response;
+}
+
+#pragma mark - Private
+
++ (ARDMessageResultType)resultTypeFromString:(NSString *)resultString {
+  ARDMessageResultType result = kARDMessageResultTypeUnknown;
+  if ([resultString isEqualToString:@"SUCCESS"]) {
+    result = kARDMessageResultTypeSuccess;
+  } else if ([resultString isEqualToString:@"INVALID_CLIENT"]) {
+    result = kARDMessageResultTypeInvalidClient;
+  } else if ([resultString isEqualToString:@"INVALID_ROOM"]) {
+    result = kARDMessageResultTypeInvalidRoom;
+  }
+  return result;
+}
+
+@end