diff --git a/examples/BUILD.gn b/examples/BUILD.gn
index 181175e7fb..68e9f4c7d6 100644
--- a/examples/BUILD.gn
+++ b/examples/BUILD.gn
@@ -296,8 +296,6 @@ if (is_ios || (is_mac && target_cpu != "x86")) {
       "objc/AppRTCMobile/RTCIceCandidate+JSON.m",
       "objc/AppRTCMobile/RTCIceServer+JSON.h",
       "objc/AppRTCMobile/RTCIceServer+JSON.m",
-      "objc/AppRTCMobile/RTCMediaConstraints+JSON.h",
-      "objc/AppRTCMobile/RTCMediaConstraints+JSON.m",
       "objc/AppRTCMobile/RTCSessionDescription+JSON.h",
       "objc/AppRTCMobile/RTCSessionDescription+JSON.m",
     ]
diff --git a/examples/objc/AppRTCMobile/RTCMediaConstraints+JSON.h b/examples/objc/AppRTCMobile/RTCMediaConstraints+JSON.h
deleted file mode 100644
index 5f16a2a3af..0000000000
--- a/examples/objc/AppRTCMobile/RTCMediaConstraints+JSON.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- *  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 <WebRTC/RTCMediaConstraints.h>
-
-@interface RTCMediaConstraints (JSON)
-
-+ (RTCMediaConstraints *)constraintsFromJSONDictionary:(NSDictionary *)dictionary;
-
-@end
diff --git a/examples/objc/AppRTCMobile/RTCMediaConstraints+JSON.m b/examples/objc/AppRTCMobile/RTCMediaConstraints+JSON.m
deleted file mode 100644
index c903735693..0000000000
--- a/examples/objc/AppRTCMobile/RTCMediaConstraints+JSON.m
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- *  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 "RTCMediaConstraints+JSON.h"
-
-static NSString const *kRTCMediaConstraintsMandatoryKey = @"mandatory";
-
-@implementation RTCMediaConstraints (JSON)
-
-+ (RTCMediaConstraints *)constraintsFromJSONDictionary:
-    (NSDictionary *)dictionary {
-  NSDictionary *mandatory = dictionary[kRTCMediaConstraintsMandatoryKey];
-  NSMutableDictionary *mandatoryContraints =
-      [NSMutableDictionary dictionaryWithCapacity:[mandatory count]];
-  [mandatory enumerateKeysAndObjectsUsingBlock:^(
-      id key, id obj, BOOL *stop) {
-    mandatoryContraints[key] = obj;
-  }];
-  // TODO(tkchin): figure out json formats for optional constraints.
-  RTCMediaConstraints *constraints =
-      [[RTCMediaConstraints alloc]
-          initWithMandatoryConstraints:mandatoryContraints
-                   optionalConstraints:nil];
-  return constraints;
-}
-
-@end