[wasm] Properly handlify WasmCompiledModule::Clone.

src/wasm/wasm-module.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_WASM_MODULE_H_
 #define V8_WASM_MODULE_H_
 
 #include <memory>
 
 #include "src/api.h"
@@ skipping 424 matching lines @@
 #define WCM_INIT_LARGE_NUMBER(IGNORE, NAME)                          \
   number = isolate->factory()->NewHeapNumber(0.0, MUTABLE, TENURED); \
   ret->set(kID_##NAME, *number);
 
 #define INITIALIZER(KIND, TYPE, NAME) WCM_INIT_##KIND(TYPE, NAME)
     WCM_PROPERTY_TABLE(INITIALIZER)
 #undef INITIALIZER
     return handle(WasmCompiledModule::cast(*ret));
   }
 
-  Handle<WasmCompiledModule> Clone(Isolate* isolate) {
-    Handle<WasmCompiledModule> ret = handle(WasmCompiledModule::cast(
-        *isolate->factory()->CopyFixedArray(handle(this))));
+  static Handle<WasmCompiledModule> Clone(Isolate* isolate,
+                                          Handle<WasmCompiledModule> module) {
+    Handle<WasmCompiledModule> ret = Handle<WasmCompiledModule>::cast(
+        isolate->factory()->CopyFixedArray(module));
     Handle<HeapNumber> number =
         isolate->factory()->NewHeapNumber(0.0, MUTABLE, TENURED);
     ret->set(kID_mem_size, *number);
-    ret->set_mem_size(mem_size());
+    ret->set_mem_size(module->mem_size());
     return ret;
   }
 
 #define DECLARATION(KIND, TYPE, NAME) WCM_##KIND(TYPE, NAME)
   WCM_PROPERTY_TABLE(DECLARATION)
 #undef DECLARATION
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(WasmCompiledModule);
 };
@@ skipping 82 matching lines @@
                             int instance_count);
 void ValidateModuleState(Isolate* isolate, Handle<JSObject> module_obj);
 void ValidateOrphanedInstance(Isolate* isolate, Handle<JSObject> instance);
 
 }  // namespace testing
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_WASM_MODULE_H_