Replace NewFunction(MaybeHandle<> prototype by Handle<> prototype

src/factory.h

 // Copyright 2014 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_FACTORY_H_
 #define V8_FACTORY_H_
 
 #include "isolate.h"
 
 namespace v8 {
@@ skipping 434 matching lines @@
   // constructor.  The object is reinitialized and behaves as an
   // object that has been freshly allocated using the constructor.
   void ReinitializeJSGlobalProxy(Handle<JSGlobalProxy> global,
                                  Handle<JSFunction> constructor);
 
   // Change the type of the argument into a JS object/function and reinitialize.
   void BecomeJSObject(Handle<JSReceiver> object);
   void BecomeJSFunction(Handle<JSReceiver> object);
 
   Handle<JSFunction> NewFunction(Handle<String> name,
-                                 MaybeHandle<Object> maybe_prototype,
-                                 MaybeHandle<Code> maybe_code);
+                                 MaybeHandle<Code> maybe_code,
+                                 MaybeHandle<Object> maybe_prototype =
+                                     MaybeHandle<Object>());
   Handle<JSFunction> NewFunction(Handle<String> name);
 
   Handle<JSFunction> NewFunctionFromSharedFunctionInfo(
       Handle<SharedFunctionInfo> function_info,
       Handle<Context> context,
       PretenureFlag pretenure = TENURED);
 
-  Handle<JSFunction> NewFunction(MaybeHandle<Object> maybe_prototype,
+  Handle<JSFunction> NewFunction(Handle<Object> maybe_prototype,
                                  Handle<String> name,
                                  InstanceType type,
                                  int instance_size,
                                  Handle<Code> code);
   Handle<JSFunction> NewFunction(Handle<String> name,
                                  InstanceType type,
                                  int instance_size,
                                  Handle<Code> code);
 
   // Create a serialized scope info.
@@ skipping 209 matching lines @@
   // the string representation of the number.  Otherwise return undefined.
   Handle<Object> GetNumberStringCache(Handle<Object> number);
 
   // Update the cache with a new number-string pair.
   void SetNumberStringCache(Handle<Object> number, Handle<String> string);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_