Revert of Split iOS sdk in to separate targets

webrtc/sdk/objc/Framework/Classes/Common/RTCFieldTrials.mm

-/*
- *  Copyright 2016 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/RTCFieldTrials.h"
-
-#include <memory>
-
-#import "WebRTC/RTCLogging.h"
-
-// Adding 'nogncheck' to disable the gn include headers check.
-// We don't want to depend on 'system_wrappers:field_trial_default' because
-// clients should be able to provide their own implementation.
-#include "webrtc/system_wrappers/include/field_trial_default.h"  // nogncheck
-
-NSString * const kRTCFieldTrialAudioSendSideBweKey = @"WebRTC-Audio-SendSideBwe";
-NSString * const kRTCFieldTrialSendSideBweWithOverheadKey = @"WebRTC-SendSideBwe-WithOverhead";
-NSString * const kRTCFieldTrialFlexFec03AdvertisedKey = @"WebRTC-FlexFEC-03-Advertised";
-NSString * const kRTCFieldTrialFlexFec03Key = @"WebRTC-FlexFEC-03";
-NSString * const kRTCFieldTrialImprovedBitrateEstimateKey = @"WebRTC-ImprovedBitrateEstimate";
-NSString * const kRTCFieldTrialMedianSlopeFilterKey = @"WebRTC-BweMedianSlopeFilter";
-NSString * const kRTCFieldTrialTrendlineFilterKey = @"WebRTC-BweTrendlineFilter";
-NSString * const kRTCFieldTrialH264HighProfileKey = @"WebRTC-H264HighProfile";
-NSString * const kRTCFieldTrialEnabledValue = @"Enabled";
-
-static std::unique_ptr<char[]> gFieldTrialInitString;
-
-NSString *RTCFieldTrialMedianSlopeFilterValue(
-    size_t windowSize, double thresholdGain) {
-  NSString *format = @"Enabled-%zu,%lf";
-  return [NSString stringWithFormat:format, windowSize, thresholdGain];
-}
-
-NSString *RTCFieldTrialTrendlineFilterValue(
-    size_t windowSize, double smoothingCoeff, double thresholdGain) {
-  NSString *format = @"Enabled-%zu,%lf,%lf";
-  return [NSString stringWithFormat:format, windowSize, smoothingCoeff, thresholdGain];
-}
-
-void RTCInitFieldTrialDictionary(NSDictionary<NSString *, NSString *> *fieldTrials) {
-  if (!fieldTrials) {
-    RTCLogWarning(@"No fieldTrials provided.");
-    return;
-  }
-  // Assemble the keys and values into the field trial string.
-  // We don't perform any extra format checking. That should be done by the underlying WebRTC calls.
-  NSMutableString *fieldTrialInitString = [NSMutableString string];
-  for (NSString *key in fieldTrials) {
-    NSString *fieldTrialEntry = [NSString stringWithFormat:@"%@/%@/", key, fieldTrials[key]];
-    [fieldTrialInitString appendString:fieldTrialEntry];
-  }
-  size_t len = fieldTrialInitString.length + 1;
-  gFieldTrialInitString.reset(new char[len]);
-  if (![fieldTrialInitString getCString:gFieldTrialInitString.get()
-                              maxLength:len
-                               encoding:NSUTF8StringEncoding]) {
-    RTCLogError(@"Failed to convert field trial string.");
-    return;
-  }
-  webrtc::field_trial::InitFieldTrialsFromString(gFieldTrialInitString.get());
-}