Remove raw DictionaryValue::Set in //components

components/login/screens/screen_context.cc

Index: components/login/screens/screen_context.cc
diff --git a/components/login/screens/screen_context.cc b/components/login/screens/screen_context.cc
index 5e170b682d8f5d7cb067599ad90e56ab76891b6c..b5defbb7d4c8e97ba9c7a60e0f08499436fae282 100644
--- a/components/login/screens/screen_context.cc
+++ b/components/login/screens/screen_context.cc
@@ -5,8 +5,10 @@
 #include "components/login/screens/screen_context.h"
 
 #include <memory>
+#include <utility>
 
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 
 namespace login {
 
@@ -176,8 +178,8 @@ bool ScreenContext::Set(const KeyType& key, base::Value* value) {
   if (in_storage && new_value->Equals(current_value))
     return false;
 
-  changes_.Set(key, new_value->DeepCopy());
-  storage_.Set(key, new_value.release());
+  changes_.Set(key, base::MakeUnique<base::Value>(*new_value));
+  storage_.Set(key, std::move(new_value));
   return true;
 }