Use clustered serialization for full snapshots.

runtime/vm/stub_code.h

Index: runtime/vm/stub_code.h
diff --git a/runtime/vm/stub_code.h b/runtime/vm/stub_code.h
index 8232a4b2fa57d14126bc8c8e4596cf9b06768153..0cf7c267f7625b6b1092f8fc4a086071fb85b672 100644
--- a/runtime/vm/stub_code.h
+++ b/runtime/vm/stub_code.h
@@ -17,6 +17,8 @@ class ObjectPointerVisitor;
 class RawCode;
 class SnapshotReader;
 class SnapshotWriter;
+class Serializer;
+class Deserializer;
 
 // List of stubs created in the VM isolate, these stubs are shared by different
 // isolates running in this dart process.
@@ -112,8 +114,9 @@ class StubCode : public AllStatic {
   // only once and the stub code resides in the vm_isolate heap.
   static void InitOnce();
 
-  static void ReadFrom(SnapshotReader* reader);
-  static void WriteTo(SnapshotWriter* writer);
+  static void Push(Serializer* serializer);
+  static void WriteRef(Serializer* serializer);
+  static void ReadRef(Deserializer* deserializer);
 
   // Generate all stubs which are generated on a per isolate basis as they
   // have embedded objects which are isolate specific.