Some MaybeHandles related cleanups.

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2346 matching lines @@
       Handle<Name> name,
       bool continue_search);
   static PropertyAttributes GetElementAttributeWithReceiver(
       Handle<JSObject> object,
       Handle<JSReceiver> receiver,
       uint32_t index,
       bool continue_search);
 
   // Retrieves an AccessorPair property from the given object. Might return
   // undefined if the property doesn't exist or is of a different kind.
-  static Handle<Object> GetAccessor(Handle<JSObject> object,
-                                    Handle<Name> name,
-                                    AccessorComponent component);
+  MUST_USE_RESULT static MaybeHandle<Object> GetAccessor(
+      Handle<JSObject> object,
+      Handle<Name> name,
+      AccessorComponent component);
 
   // Defines an AccessorPair property on the given object.
   // TODO(mstarzinger): Rename to SetAccessor() and return empty handle on
   // exception instead of letting callers check for scheduled exception.
   static void DefineAccessor(Handle<JSObject> object,
                              Handle<Name> name,
                              Handle<Object> getter,
                              Handle<Object> setter,
                              PropertyAttributes attributes,
                              v8::AccessControl access_control = v8::DEFAULT);
 
   // Defines an AccessorInfo property on the given object.
-  static Handle<Object> SetAccessor(Handle<JSObject> object,
-                                    Handle<AccessorInfo> info);
+  MUST_USE_RESULT static MaybeHandle<Object> SetAccessor(
+      Handle<JSObject> object,
+      Handle<AccessorInfo> info);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetPropertyWithInterceptor(
       Handle<JSObject> object,
       Handle<Object> receiver,
       Handle<Name> name,
       PropertyAttributes* attributes);
   MUST_USE_RESULT static MaybeHandle<Object> GetPropertyPostInterceptor(
       Handle<JSObject> object,
       Handle<Object> receiver,
       Handle<Name> name,
@@ skipping 257 matching lines @@
   // Note: this call does not update write barrier, the caller is responsible
   // to ensure that |filler_value| can be collected without WB here.
   inline void InitializeBody(Map* map,
                              Object* pre_allocated_value,
                              Object* filler_value);
 
   // Check whether this object references another object
   bool ReferencesObject(Object* obj);
 
   // Disalow further properties to be added to the object.
-  static Handle<Object> PreventExtensions(Handle<JSObject> object);
+  MUST_USE_RESULT static MaybeHandle<Object> PreventExtensions(
+      Handle<JSObject> object);
 
   // ES5 Object.freeze
   MUST_USE_RESULT static MaybeHandle<Object> Freeze(Handle<JSObject> object);
 
   // Called the first time an object is observed with ES7 Object.observe.
   static void SetObserved(Handle<JSObject> object);
 
   // Copy object.
   enum DeepCopyHints {
     kNoHints = 0,
@@ skipping 259 matching lines @@
                               Handle<Object> value,
                               PropertyAttributes attributes);
 
   MUST_USE_RESULT static MaybeHandle<Object> DeleteProperty(
       Handle<JSObject> object,
       Handle<Name> name,
       DeleteMode mode);
   static Handle<Object> DeletePropertyPostInterceptor(Handle<JSObject> object,
                                                       Handle<Name> name,
                                                       DeleteMode mode);
-  static Handle<Object> DeletePropertyWithInterceptor(Handle<JSObject> object,
-                                                      Handle<Name> name);
+  MUST_USE_RESULT static MaybeHandle<Object> DeletePropertyWithInterceptor(
+      Handle<JSObject> object,
+      Handle<Name> name);
 
   // Deletes the named property in a normalized object.
   static Handle<Object> DeleteNormalizedProperty(Handle<JSObject> object,
                                                  Handle<Name> name,
                                                  DeleteMode mode);
 
   MUST_USE_RESULT static MaybeHandle<Object> DeleteElement(
       Handle<JSObject> object,
       uint32_t index,
       DeleteMode mode);
@@ skipping 8147 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_