[wasm][asm.js] Pass Script with Handle.

src/asmjs/asm-wasm-builder.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ASMJS_ASM_WASM_BUILDER_H_
 #define V8_ASMJS_ASM_WASM_BUILDER_H_
 
 #include "src/allocation.h"
 #include "src/asmjs/asm-typer.h"
 #include "src/objects.h"
@@ skipping 10 matching lines @@
 
 class AsmWasmBuilder {
  public:
   struct Result {
     ZoneBuffer* module_bytes;
     ZoneBuffer* asm_offset_table;
     bool success;
   };
 
   explicit AsmWasmBuilder(Isolate* isolate, Zone* zone,
-                          AstValueFactory* ast_value_factory, Script* script,
-                          FunctionLiteral* root);
+                          AstValueFactory* ast_value_factory,
+                          Handle<Script> script, FunctionLiteral* root);
   Result Run(Handle<FixedArray>* foreign_args);
 
   static const char* foreign_init_name;
   static const char* single_function_name;
 
   const AsmTyper* typer() { return &typer_; }
 
  private:
   Isolate* isolate_;
   Zone* zone_;
   AstValueFactory* ast_value_factory_;
-  Script* script_;
+  Handle<Script> script_;
   FunctionLiteral* literal_;
   AsmTyper typer_;
 };
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_WASM_ASM_WASM_BUILDER_H_