Revert of 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.
- */
-
-#import "WebRTC/RTCLogging.h"
-
-#include "webrtc/base/logging.h"
-
-rtc::LoggingSeverity RTCGetNativeLoggingSeverity(RTCLoggingSeverity severity) {
-  switch (severity) {
-    case RTCLoggingSeverityVerbose:
-      return rtc::LS_VERBOSE;
-    case RTCLoggingSeverityInfo:
-      return rtc::LS_INFO;
-    case RTCLoggingSeverityWarning:
-      return rtc::LS_WARNING;
-    case RTCLoggingSeverityError:
-      return rtc::LS_ERROR;
-  }
-}
-
-void RTCLogEx(RTCLoggingSeverity severity, NSString* log_string) {
-  if (log_string.length) {
-    const char* utf8_string = log_string.UTF8String;
-    LOG_V(RTCGetNativeLoggingSeverity(severity)) << utf8_string;
-  }
-}
-
-void RTCSetMinDebugLogLevel(RTCLoggingSeverity severity) {
-  rtc::LogMessage::LogToDebug(RTCGetNativeLoggingSeverity(severity));
-}
-
-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;
-}
-