Add the URL attribute to cricket::Candiate. (Objc wrapper)

webrtc/sdk/objc/Framework/UnitTests/RTCIceCandidateTest.mm

 /*
  *  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.
  */
 
@@ skipping 14 matching lines @@
 
 @implementation RTCIceCandidateTest
 
 - (void)testCandidate {
   NSString *sdp = @"candidate:4025901590 1 udp 2122265343 "
                    "fdff:2642:12a6:fe38:c001:beda:fcf9:51aa "
                    "59052 typ host generation 0";
 
   RTCIceCandidate *candidate = [[RTCIceCandidate alloc] initWithSdp:sdp
                                                       sdpMLineIndex:0
-                                                             sdpMid:@"audio"];
+                                                             sdpMid:@"audio"
+                                                          serverUrl:@"server url"];
 
   std::unique_ptr<webrtc::IceCandidateInterface> nativeCandidate =
       candidate.nativeCandidate;
   EXPECT_EQ("audio", nativeCandidate->sdp_mid());
   EXPECT_EQ(0, nativeCandidate->sdp_mline_index());
 
   std::string sdpString;
   nativeCandidate->ToString(&sdpString);
   EXPECT_EQ(sdp.stdString, sdpString);
 }
@@ skipping 21 matching lines @@
     [test testCandidate];
   }
 }
 
 TEST(RTCIceCandidateTest, InitFromCandidateTest) {
   @autoreleasepool {
     RTCIceCandidateTest *test = [[RTCIceCandidateTest alloc] init];
     [test testInitFromNativeCandidate];
   }
 }