Replace scoped_ptr with unique_ptr in talk/

talk/app/webrtc/objc/RTCMediaConstraints.mm

 /*
  * libjingle
  * Copyright 2013 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 15 matching lines @@
  */
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 #import "RTCMediaConstraints+Internal.h"
 
 #import "RTCPair.h"
 
-#include "webrtc/base/scoped_ptr.h"
+#include <memory>
 
 // TODO(hughv):  Add accessors for mandatory and optional constraints.
 // TODO(hughv):  Add description.
 
 @implementation RTCMediaConstraints {
-  rtc::scoped_ptr<webrtc::RTCMediaConstraintsNative> _constraints;
+  std::unique_ptr<webrtc::RTCMediaConstraintsNative> _constraints;
   webrtc::MediaConstraintsInterface::Constraints _mandatory;
   webrtc::MediaConstraintsInterface::Constraints _optional;
 }
 
 - (id)initWithMandatoryConstraints:(NSArray*)mandatory
                optionalConstraints:(NSArray*)optional {
   if ((self = [super init])) {
     _mandatory = [[self class] constraintsFromArray:mandatory];
     _optional = [[self class] constraintsFromArray:optional];
     _constraints.reset(
@@ skipping 14 matching lines @@
 
 @end
 
 @implementation RTCMediaConstraints (internal)
 
 - (const webrtc::RTCMediaConstraintsNative*)constraints {
   return _constraints.get();
 }
 
 @end