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

components/keyed_service/core/keyed_service_base_factory.cc

Index: components/keyed_service/core/keyed_service_base_factory.cc
diff --git a/components/keyed_service/core/keyed_service_base_factory.cc b/components/keyed_service/core/keyed_service_base_factory.cc
index 48643305759bcc97660622b7d38adfefcfbbbdfa..773b1f941c915493e959005042c7df7008581f0a 100644
--- a/components/keyed_service/core/keyed_service_base_factory.cc
+++ b/components/keyed_service/core/keyed_service_base_factory.cc
@@ -53,6 +53,7 @@ KeyedServiceBaseFactory::KeyedServiceBaseFactory(const char* service_name,
 }
 
 KeyedServiceBaseFactory::~KeyedServiceBaseFactory() {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   dependency_manager_->RemoveComponent(this);
 }
 
@@ -88,7 +89,7 @@ void KeyedServiceBaseFactory::AssertContextWasntDestroyed(
 }
 
 void KeyedServiceBaseFactory::MarkContextLive(base::SupportsUserData* context) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   dependency_manager_->MarkContextLive(context);
 }
 
@@ -104,7 +105,7 @@ void KeyedServiceBaseFactory::ContextDestroyed(
     base::SupportsUserData* context) {
   // While object destruction can be customized in ways where the object is
   // only dereferenced, this still must run on the UI thread.
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   registered_preferences_.erase(context);
 }