Reland of Split iOS sdk in to separate targets

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

 /*
  *  Copyright (c) 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 <AVFoundation/AVFoundation.h>
 #import <Foundation/Foundation.h>
 #import <sys/sysctl.h>
 #if defined(WEBRTC_IOS)
 #import <UIKit/UIKit.h>
 #endif
 
 #include <memory>
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/logging.h"
-#include "webrtc/sdk/objc/Framework/Classes/helpers.h"
+#include "webrtc/sdk/objc/Framework/Classes/Common/helpers.h"
 
 namespace webrtc {
 namespace ios {
 
 #if defined(WEBRTC_IOS)
 bool isOperatingSystemAtLeastVersion(double version) {
   return GetSystemVersion() >= version;
 }
 #endif
 
@@ skipping 24 matching lines @@
 }
 
 // TODO(henrika): see if it is possible to move to GetThreadName in
 // platform_thread.h and base it on pthread methods instead.
 std::string GetCurrentThreadDescription() {
   NSString* name = [NSString stringWithFormat:@"%@", [NSThread currentThread]];
   return StdStringFromNSString(name);
 }
 
 #if defined(WEBRTC_IOS)
-std::string GetAudioSessionCategory() {
-  NSString* category = [[AVAudioSession sharedInstance] category];
-  return StdStringFromNSString(category);
-}
-
 std::string GetSystemName() {
   NSString* osName = [[UIDevice currentDevice] systemName];
   return StdStringFromNSString(osName);
 }
 
 std::string GetSystemVersionAsString() {
   NSString* osVersion = [[UIDevice currentDevice] systemVersion];
   return StdStringFromNSString(osVersion);
 }
 
@@ skipping 49 matching lines @@
   }
   LOG(LS_WARNING) << "webrtc::ios::GetLowPowerModeEnabled() is not "
                      "supported. Requires at least iOS 9.0";
   return false;
 }
 #endif
 
 }  // namespace ios
 }  // namespace webrtc