Adding a type vector to replace type cells.

src/compiler.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 157 matching lines @@
   }
 
   ParseRestriction parse_restriction() const {
     return ParseRestricitonField::decode(flags_);
   }
 
   void SetFunction(FunctionLiteral* literal) {
     ASSERT(function_ == NULL);
     function_ = literal;
   }
-  void SetScope(Scope* scope) {
-    ASSERT(scope_ == NULL);
-    scope_ = scope;
-  }
+  // When the scope is applied, we may have deferred work to do on the function.
+  void PrepareForCompilation(Scope* scope);
   void SetGlobalScope(Scope* global_scope) {
     ASSERT(global_scope_ == NULL);
     global_scope_ = global_scope;
   }
   void SetCode(Handle<Code> code) { code_ = code; }
   void SetExtension(v8::Extension* extension) {
     ASSERT(!is_lazy());
     extension_ = extension;
   }
   void SetPreParseData(ScriptDataImpl* pre_parse_data) {
@@ skipping 484 matching lines @@
   unsigned info_zone_start_allocation_size_;
   ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_