Replace deprecated base::NonThreadSafe in components/login in favor of SequenceChecker.

components/login/screens/screen_context.cc

 // Copyright (c) 2013 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 "components/login/screens/screen_context.h"
 
 #include <memory>
 
 #include "base/logging.h"
 
@@ skipping 11 matching lines @@
   }
   return result;
 }
 
 }  // namespace
 
 ScreenContext::ScreenContext() {
 }
 
 ScreenContext::~ScreenContext() {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 }
 
 bool ScreenContext::SetBoolean(const KeyType& key, bool value) {
   return Set(key, new base::Value(value));
 }
 
 bool ScreenContext::SetInteger(const KeyType& key, int value) {
   return Set(key, new base::Value(value));
 }
 
@@ skipping 82 matching lines @@
 }
 
 void ScreenContext::CopyFrom(ScreenContext& context) {
   std::unique_ptr<base::DictionaryValue> storage(context.storage_.DeepCopy());
   std::unique_ptr<base::DictionaryValue> changes(context.changes_.DeepCopy());
   storage_.Swap(storage.get());
   changes_.Swap(changes.get());
 }
 
 bool ScreenContext::HasKey(const KeyType& key) const {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   return storage_.HasKey(key);
 }
 
 bool ScreenContext::HasChanges() const {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   return !changes_.empty();
 }
 
 void ScreenContext::GetChangesAndReset(base::DictionaryValue* diff) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   DCHECK(diff);
   changes_.Swap(diff);
   changes_.Clear();
 }
 
 void ScreenContext::ApplyChanges(const base::DictionaryValue& diff,
                                  std::vector<std::string>* keys) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   DCHECK(!HasChanges());
   if (keys) {
     keys->clear();
     keys->reserve(diff.size());
   }
 
   for (base::DictionaryValue::Iterator it(diff); !it.IsAtEnd(); it.Advance()) {
     Set(it.key(), it.value().DeepCopy());
     if (keys)
       keys->push_back(it.key());
   }
   changes_.Clear();
 }
 
 bool ScreenContext::Set(const KeyType& key, base::Value* value) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   DCHECK(value);
   std::unique_ptr<base::Value> new_value(value);
 
   base::Value* current_value;
   bool in_storage = storage_.Get(key, &current_value);
 
   // Don't do anything if |storage_| already contains <|key|, |new_value|> pair.
   if (in_storage && new_value->Equals(current_value))
     return false;
 
   changes_.Set(key, new_value->DeepCopy());
   storage_.Set(key, new_value.release());
   return true;
 }
 
 }  // namespace login