Remove (now) unused GetPropertyWithHandler.

src/objects.h

 // 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/allocation.h"
@@ skipping 9535 matching lines @@
 
   // ES6 9.5.11
   static bool Enumerate(Isolate* isolate, Handle<JSReceiver> receiver,
                         Handle<JSProxy> proxy, KeyAccumulator* accumulator);
 
   // ES6 9.5.12
   static bool OwnPropertyKeys(Isolate* isolate, Handle<JSReceiver> receiver,
                               Handle<JSProxy> proxy, PropertyFilter filter,
                               KeyAccumulator* accumulator);
 
-  MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithHandler(
-      Handle<JSProxy> proxy,
-      Handle<Object> receiver,
-      Handle<Name> name);
-
   MUST_USE_RESULT static Maybe<PropertyAttributes> GetPropertyAttributes(
       LookupIterator* it);
 
   // Dispatched behavior.
   DECLARE_PRINTER(JSProxy)
   DECLARE_VERIFIER(JSProxy)
 
   // Layout description. We add padding so that a proxy has the same
   // size as a virgin JSObject. This is essential for becoming a JSObject
   // upon freeze.
@@ skipping 1145 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_