[Isolates] Fix auto extraction of isolate from heap objects in handle constructor.

src/handles-inl.h

 // Copyright 2006-2008 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 19 matching lines @@
 #define V8_HANDLES_INL_H_
 
 #include "api.h"
 #include "apiutils.h"
 #include "handles.h"
 #include "isolate.h"
 
 namespace v8 {
 namespace internal {
 
+inline Isolate* GetIsolateForHandle(Object* obj) {
+  return Isolate::Current();
+}
+
+inline Isolate* GetIsolateForHandle(HeapObject* obj) {
+  return obj->GetIsolate();
+}
+
 template<class T>
 Handle<T>::Handle(T* obj) {
   ASSERT(!obj->IsFailure());
-  location_ = HandleScope::CreateHandle(obj, Isolate::Current());
-}
-
-template<class T>
-Handle<T>::Handle(HeapObject* obj) {
-  location_ = HandleScope::CreateHandle<T>(obj, obj->GetIsolate());
+  location_ = HandleScope::CreateHandle(obj, GetIsolateForHandle(obj));
 }
 
 
 template<class T>
 Handle<T>::Handle(T* obj, Isolate* isolate) {
   ASSERT(!obj->IsFailure());
   location_ = HandleScope::CreateHandle(obj, isolate);
 }
 
 
@@ skipping 98 matching lines @@
   // Restore state in current handle scope to re-enable handle
   // allocations.
   Isolate::Current()->handle_scope_data()->extensions = extensions_;
 }
 #endif
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HANDLES_INL_H_