Move kMaxRegularHeapObjectSize into globals

src/snapshot/serializer.cc

Index: src/snapshot/serializer.cc
diff --git a/src/snapshot/serializer.cc b/src/snapshot/serializer.cc
index d7a7f8927851dbd2d1bcb80a231c583ce0615099..f622a5b8d24a795d8411f1899085915f03ccb898 100644
--- a/src/snapshot/serializer.cc
+++ b/src/snapshot/serializer.cc
@@ -403,9 +403,8 @@ void Serializer::ObjectSerializer::SerializeExternalString() {
         ExternalTwoByteString::cast(string)->resource()->data());
   }
 
-  AllocationSpace space = (allocation_size > Page::kMaxRegularHeapObjectSize)
-                              ? LO_SPACE
-                              : OLD_SPACE;
+  AllocationSpace space =
+      (allocation_size > kMaxRegularHeapObjectSize) ? LO_SPACE : OLD_SPACE;
   SerializePrologue(space, allocation_size, map);
 
   // Output the rest of the imaginary string.