Adding template parameter to PrototypeIterator GetCurrent for casting

src/isolate.cc

 // Copyright 2012 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.
 
 #include "src/isolate.h"
 
 #include <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
@@ skipping 1330 matching lines @@
 
 // Traverse prototype chain to find out whether the object is derived from
 // the Error object.
 bool Isolate::IsErrorObject(Handle<Object> obj) {
   if (!obj->IsJSObject()) return false;
   Handle<Object> error_constructor = error_function();
   DisallowHeapAllocation no_gc;
   for (PrototypeIterator iter(this, *obj, PrototypeIterator::START_AT_RECEIVER);
        !iter.IsAtEnd(); iter.Advance()) {
     if (iter.GetCurrent()->IsJSProxy()) return false;
-    if (JSObject::cast(iter.GetCurrent())->map()->GetConstructor() ==
+    if (iter.GetCurrent<JSObject>()->map()->GetConstructor() ==
         *error_constructor) {
       return true;
     }
   }
   return false;
 }
 
 
 Handle<JSMessageObject> Isolate::CreateMessage(Handle<Object> exception,
                                                MessageLocation* location) {
@@ skipping 1460 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8