Revert of Rename AppRTCDemo on Android and iOS to AppRTCMobile

webrtc/examples/objc/AppRTCMobile/ARDBitrateTracker.h

-/*
- *  Copyright 2015 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 <Foundation/Foundation.h>
-
-/** Class used to estimate bitrate based on byte count. It is expected that
- *  byte count is monotonocially increasing. This class tracks the times that
- *  byte count is updated, and measures the bitrate based on the byte difference
- *  over the interval between updates.
- */
-@interface ARDBitrateTracker : NSObject
-
-/** The bitrate in bits per second. */
-@property(nonatomic, readonly) double bitrate;
-/** The bitrate as a formatted string in bps, Kbps or Mbps. */
-@property(nonatomic, readonly) NSString *bitrateString;
-
-/** Converts the bitrate to a readable format in bps, Kbps or Mbps. */
-+ (NSString *)bitrateStringForBitrate:(double)bitrate;
-/** Updates the tracked bitrate with the new byte count. */
-- (void)updateBitrateWithCurrentByteCount:(NSInteger)byteCount;
-
-@end