Convert //ios from scoped_ptr to std::unique_ptr.

ios/crnet/sdch_owner_pref_storage.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ios/crnet/sdch_owner_pref_storage.h"
 
 #include "base/values.h"
 #include "components/prefs/persistent_pref_store.h"
 
 namespace {
@@ skipping 54 matching lines @@
   return result_value->GetAsDictionary(result);
 }
 
 bool SdchOwnerPrefStorage::GetMutableValue(base::DictionaryValue** result) {
   base::Value* result_value = nullptr;
   if (!storage_->GetMutableValue(storage_key_, &result_value))
     return false;
   return result_value->GetAsDictionary(result);
 }
 
-void SdchOwnerPrefStorage::SetValue(scoped_ptr<base::DictionaryValue> value) {
+void SdchOwnerPrefStorage::SetValue(
+    std::unique_ptr<base::DictionaryValue> value) {
   storage_->SetValue(storage_key_, std::move(value),
                      WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
 }
 
 void SdchOwnerPrefStorage::ReportValueChanged() {
   storage_->ReportValueChanged(storage_key_,
                                WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
 }
 
 bool SdchOwnerPrefStorage::IsInitializationComplete() {
@@ skipping 12 matching lines @@
   storage_->RemoveObserver(this);
 }
 
 void SdchOwnerPrefStorage::OnPrefValueChanged(const std::string& key) {
 }
 
 void SdchOwnerPrefStorage::OnInitializationCompleted(bool succeeded) {
   DCHECK(init_observer_);
   init_observer_->OnPrefStorageInitializationComplete(succeeded);
 }