[runtime] Unify the ToObject handling.

src/objects.h

 // Copyright 2015 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 1117 matching lines @@
       Handle<Object> x, Handle<Object> y, Strength strength = Strength::WEAK);
 
   // ES6 section 7.2.12 Abstract Equality Comparison
   MUST_USE_RESULT static Maybe<bool> Equals(Handle<Object> x, Handle<Object> y);
 
   // 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);
+  MUST_USE_RESULT 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 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);
@@ skipping 9594 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_