Move talk/examples/* to webrtc/examples.

webrtc/examples/objc/AppRTCDemo/RTCSessionDescription+JSON.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 "RTCSessionDescription+JSON.h"
+
+static NSString const *kRTCSessionDescriptionTypeKey = @"type";
+static NSString const *kRTCSessionDescriptionSdpKey = @"sdp";
+
+@implementation RTCSessionDescription (JSON)
+
++ (RTCSessionDescription *)descriptionFromJSONDictionary:
+    (NSDictionary *)dictionary {
+  NSString *type = dictionary[kRTCSessionDescriptionTypeKey];
+  NSString *sdp = dictionary[kRTCSessionDescriptionSdpKey];
+  return [[RTCSessionDescription alloc] initWithType:type sdp:sdp];
+}
+
+- (NSData *)JSONData {
+  NSDictionary *json = @{
+    kRTCSessionDescriptionTypeKey : self.type,
+    kRTCSessionDescriptionSdpKey : self.description
+  };
+  return [NSJSONSerialization dataWithJSONObject:json options:0 error:nil];
+}
+
+@end