Switch AppRTCMobile #import headers.

Bug: None
Change-Id: Ia03faae59e4891039fc6c0acdeb51fdfea048c7b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/189547
Reviewed-by: Anders Carlsson <andersc@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32447}
diff --git a/examples/objc/AppRTCMobile/RTCIceServer+JSON.h b/examples/objc/AppRTCMobile/RTCIceServer+JSON.h
index 4950a58..35f6af7 100644
--- a/examples/objc/AppRTCMobile/RTCIceServer+JSON.h
+++ b/examples/objc/AppRTCMobile/RTCIceServer+JSON.h
@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#import <WebRTC/RTCIceServer.h>
+#import "sdk/objc/api/peerconnection/RTCIceServer.h"
 
 @interface RTC_OBJC_TYPE (RTCIceServer)
 (JSON)