Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/Common/RTCLogging.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 27 matching lines @@
 
 NSString* RTCFileName(const char* file_path) {
   NSString* ns_file_path =
       [[NSString alloc] initWithBytesNoCopy:const_cast<char*>(file_path)
                                      length:strlen(file_path)
                                    encoding:NSUTF8StringEncoding
                                freeWhenDone:NO];
   return ns_file_path.lastPathComponent;
 }