[es6] Fix invalid ToString in implementation of ToName.

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 1095 matching lines @@
   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);
   MUST_USE_RESULT static MaybeHandle<JSReceiver> ToObject(
       Isolate* isolate, Handle<Object> object, Handle<Context> context);
 
   // ES6 section 7.1.14 ToPropertyKey
-  MUST_USE_RESULT static inline MaybeHandle<Name> ToName(Isolate* isolate,
-                                                         Handle<Object> input);
+  MUST_USE_RESULT static MaybeHandle<Name> ToName(Isolate* isolate,
+                                                  Handle<Object> input);
 
   // ES6 section 7.1.1 ToPrimitive
   MUST_USE_RESULT static inline MaybeHandle<Object> ToPrimitive(
       Handle<Object> input, ToPrimitiveHint hint = ToPrimitiveHint::kDefault);
 
   // ES6 section 7.1.3 ToNumber
   MUST_USE_RESULT static MaybeHandle<Object> ToNumber(Handle<Object> input);
 
   // ES6 section 7.1.12 ToString
   MUST_USE_RESULT static MaybeHandle<String> ToString(Isolate* isolate,
@@ skipping 9444 matching lines @@
 
   Isolate* isolate_;
   Handle<FixedArray> keys_;
   Handle<OrderedHashSet> set_;
   int length_;
   DISALLOW_COPY_AND_ASSIGN(KeyAccumulator);
 };
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_