Revert of Change base::Value::ListStorage to std::vector<base::Value>

components/policy/core/browser/url_blacklist_policy_handler.cc

Index: components/policy/core/browser/url_blacklist_policy_handler.cc
diff --git a/components/policy/core/browser/url_blacklist_policy_handler.cc b/components/policy/core/browser/url_blacklist_policy_handler.cc
index f74f43d6c1e9a3b92089a52947c41909e9a722bb..15461902a466a872dcc56860307f01c2e021b750 100644
--- a/components/policy/core/browser/url_blacklist_policy_handler.cc
+++ b/components/policy/core/browser/url_blacklist_policy_handler.cc
@@ -60,7 +60,7 @@
   if (disabled_schemes) {
     for (const auto& entry : *disabled_schemes) {
       std::string entry_value;
-      if (entry.GetAsString(&entry_value)) {
+      if (entry->GetAsString(&entry_value)) {
         entry_value.append("://*");
         merged_url_blacklist->AppendString(entry_value);
       }
@@ -69,8 +69,8 @@
 
   if (url_blacklist) {
     for (const auto& entry : *url_blacklist) {
-      if (entry.IsType(base::Value::Type::STRING))
-        merged_url_blacklist->Append(entry.CreateDeepCopy());
+      if (entry->IsType(base::Value::Type::STRING))
+        merged_url_blacklist->Append(entry->CreateDeepCopy());
     }
   }