ElementsAccessor::SetLength() maybehandlified.

src/elements.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 127 matching lines @@
       Handle<JSObject> holder,
       uint32_t key) {
     return GetAccessorPair(receiver, holder, key, handle(holder->elements()));
   }
 
   // Modifies the length data property as specified for JSArrays and resizes the
   // underlying backing store accordingly. The method honors the semantics of
   // changing array sizes as defined in EcmaScript 5.1 15.4.5.2, i.e. array that
   // have non-deletable elements can only be shrunk to the size of highest
   // element that is non-deletable.
-  MUST_USE_RESULT virtual Handle<Object> SetLength(
+  MUST_USE_RESULT virtual MaybeHandle<Object> SetLength(
       Handle<JSArray> holder,
       Handle<Object> new_length) = 0;
 
   // Modifies both the length and capacity of a JSArray, resizing the underlying
   // backing store as necessary. This method does NOT honor the semantics of
   // EcmaScript 5.1 15.4.5.2, arrays can be shrunk beyond non-deletable
   // elements. This method should only be called for array expansion OR by
   // runtime JavaScript code that use InternalArrays and don't care about
   // EcmaScript 5.1 semantics.
   virtual void SetCapacityAndLength(
@@ skipping 91 matching lines @@
  private:
   static ElementsAccessor** elements_accessors_;
   const char* name_;
 
   DISALLOW_COPY_AND_ASSIGN(ElementsAccessor);
 };
 
 void CheckArrayAbuse(Handle<JSObject> obj, const char* op, uint32_t key,
                      bool allow_appending = false);
 
-Handle<Object> ArrayConstructInitializeElements(Handle<JSArray> array,
-                                                Arguments* args);
+MUST_USE_RESULT MaybeHandle<Object> ArrayConstructInitializeElements(
+    Handle<JSArray> array,
+    Arguments* args);
 
 } }  // namespace v8::internal
 
 #endif  // V8_ELEMENTS_H_