Replace scoped_ptr with unique_ptr everywhere

webrtc/sdk/objc/Framework/UnitTests/RTCMediaConstraintsTest.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 <Foundation/Foundation.h>
 
+#include <memory>
+
 #include "webrtc/base/gunit.h"
 
 #import "NSString+StdString.h"
 #import "RTCMediaConstraints+Private.h"
 #import "WebRTC/RTCMediaConstraints.h"
 
 @interface RTCMediaConstraintsTest : NSObject
 - (void)testMediaConstraints;
 @end
 
 @implementation RTCMediaConstraintsTest
 
 - (void)testMediaConstraints {
   NSDictionary *mandatory = @{@"key1": @"value1", @"key2": @"value2"};
   NSDictionary *optional = @{@"key3": @"value3", @"key4": @"value4"};
 
   RTCMediaConstraints *constraints = [[RTCMediaConstraints alloc]
       initWithMandatoryConstraints:mandatory
                optionalConstraints:optional];
-  rtc::scoped_ptr<webrtc::MediaConstraints> nativeConstraints =
+  std::unique_ptr<webrtc::MediaConstraints> nativeConstraints =
       [constraints nativeConstraints];
 
   webrtc::MediaConstraintsInterface::Constraints nativeMandatory =
       nativeConstraints->GetMandatory();
   [self expectConstraints:mandatory inNativeConstraints:nativeMandatory];
 
   webrtc::MediaConstraintsInterface::Constraints nativeOptional =
       nativeConstraints->GetOptional();
   [self expectConstraints:optional inNativeConstraints:nativeOptional];
 }
@@ skipping 14 matching lines @@
 }
 
 @end
 
 TEST(RTCMediaConstraintsTest, MediaConstraintsTest) {
   @autoreleasepool {
     RTCMediaConstraintsTest *test = [[RTCMediaConstraintsTest alloc] init];
     [test testMediaConstraints];
   }
 }