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

tools/json_schema_compiler/util.h

Index: tools/json_schema_compiler/util.h
diff --git a/tools/json_schema_compiler/util.h b/tools/json_schema_compiler/util.h
index 8d206a6672a4870dd609f4235766ca474bba3e25..d7862cea4f63a6682cbe25aebc8bbe0a67eae08e 100644
--- a/tools/json_schema_compiler/util.h
+++ b/tools/json_schema_compiler/util.h
@@ -102,7 +102,7 @@
   out->clear();
   T item;
   for (const auto& value : list) {
-    if (!PopulateItem(value, &item))
+    if (!PopulateItem(*value, &item))
       return false;
     // T might not be movable, but in that case it should be copyable, and this
     // will still work.
@@ -121,7 +121,7 @@
   out->clear();
   T item;
   for (const auto& value : list) {
-    if (!PopulateItem(value, &item, error))
+    if (!PopulateItem(*value, &item, error))
       return false;
     out->push_back(std::move(item));
   }