Revert of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/PeerConnection/RTCSessionDescription.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 "RTCSessionDescription+Private.h"
-
-#import "NSString+StdString.h"
-#import "WebRTC/RTCLogging.h"
-
-#include "webrtc/base/checks.h"
-
-@implementation RTCSessionDescription
-
-@synthesize type = _type;
-@synthesize sdp = _sdp;
-
-+ (NSString *)stringForType:(RTCSdpType)type {
-  std::string string = [[self class] stdStringForType:type];
-  return [NSString stringForStdString:string];
-}
-
-+ (RTCSdpType)typeForString:(NSString *)string {
-  std::string typeString = string.stdString;
-  return [[self class] typeForStdString:typeString];
-}
-
-- (instancetype)initWithType:(RTCSdpType)type sdp:(NSString *)sdp {
-  NSParameterAssert(sdp.length);
-  if (self = [super init]) {
-    _type = type;
-    _sdp = [sdp copy];
-  }
-  return self;
-}
-
-- (NSString *)description {
-  return [NSString stringWithFormat:@"RTCSessionDescription:\n%@\n%@",
-                                    [[self class] stringForType:_type],
-                                    _sdp];
-}
-
-#pragma mark - Private
-
-- (webrtc::SessionDescriptionInterface *)nativeDescription {
-  webrtc::SdpParseError error;
-
-  webrtc::SessionDescriptionInterface *description =
-      webrtc::CreateSessionDescription([[self class] stdStringForType:_type],
-                                       _sdp.stdString,
-                                       &error);
-
-  if (!description) {
-    RTCLogError(@"Failed to create session description: %s\nline: %s",
-                error.description.c_str(),
-                error.line.c_str());
-  }
-
-  return description;
-}
-
-- (instancetype)initWithNativeDescription:
-    (const webrtc::SessionDescriptionInterface *)nativeDescription {
-  NSParameterAssert(nativeDescription);
-  std::string sdp;
-  nativeDescription->ToString(&sdp);
-  RTCSdpType type = [[self class] typeForStdString:nativeDescription->type()];
-
-  return [self initWithType:type
-                        sdp:[NSString stringForStdString:sdp]];
-}
-
-+ (std::string)stdStringForType:(RTCSdpType)type {
-  switch (type) {
-    case RTCSdpTypeOffer:
-      return webrtc::SessionDescriptionInterface::kOffer;
-    case RTCSdpTypePrAnswer:
-      return webrtc::SessionDescriptionInterface::kPrAnswer;
-    case RTCSdpTypeAnswer:
-      return webrtc::SessionDescriptionInterface::kAnswer;
-  }
-}
-
-+ (RTCSdpType)typeForStdString:(const std::string &)string {
-  if (string == webrtc::SessionDescriptionInterface::kOffer) {
-    return RTCSdpTypeOffer;
-  } else if (string == webrtc::SessionDescriptionInterface::kPrAnswer) {
-    return RTCSdpTypePrAnswer;
-  } else if (string == webrtc::SessionDescriptionInterface::kAnswer) {
-    return RTCSdpTypeAnswer;
-  } else {
-    RTC_NOTREACHED();
-    return RTCSdpTypeOffer;
-  }
-}
-
-@end