Move runtime helper for ToName conversion onto Object.

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 1056 matching lines @@
 
   bool BooleanValue();                                      // ECMA-262 9.2.
 
   // ES6 section 7.2.13 Strict Equality Comparison
   bool StrictEquals(Object* that);
 
   // Convert to a JSObject if needed.
   // native_context is used when creating wrapper object.
   static inline MaybeHandle<JSReceiver> ToObject(Isolate* isolate,
                                                  Handle<Object> object);
-  static MaybeHandle<JSReceiver> ToObject(Isolate* isolate,
-                                          Handle<Object> object,
-                                          Handle<Context> context);
+  MUST_USE_RESULT static MaybeHandle<JSReceiver> ToObject(
+      Isolate* isolate, Handle<Object> object, Handle<Context> context);
+
+  // Convert to a Name if needed.
+  MUST_USE_RESULT static MaybeHandle<Name> ToName(Isolate* isolate,
+                                                  Handle<Object> object);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetProperty(
       LookupIterator* it, LanguageMode language_mode = SLOPPY);
 
   // Implementation of [[Put]], ECMA-262 5th edition, section 8.12.5.
   MUST_USE_RESULT static MaybeHandle<Object> SetProperty(
       Handle<Object> object, Handle<Name> name, Handle<Object> value,
       LanguageMode language_mode,
       StoreFromKeyed store_mode = MAY_BE_STORE_FROM_KEYED);
 
@@ skipping 9245 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_