Fix ArrayConcat for JSValues/JSFunctions/JSRegExps with @@isConcatSpreadable

src/runtime/runtime.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_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/objects.h"
 #include "src/zone.h"
@@ skipping 833 matching lines @@
   static bool SetupArrayBufferAllocatingData(Isolate* isolate,
                                              Handle<JSArrayBuffer> array_buffer,
                                              size_t allocated_length,
                                              bool initialize = true);
 
   static void NeuterArrayBuffer(Handle<JSArrayBuffer> array_buffer);
 
   static void FreeArrayBuffer(Isolate* isolate,
                               JSArrayBuffer* phantom_array_buffer);
 
+  static Handle<JSArray> StringToArray(Isolate* isolate, Handle<String> string,
+                                       uint32_t limit = 0xFFFFFFFF);
+
   static int FindIndexedNonNativeFrame(JavaScriptFrameIterator* it, int index);
 
   enum TypedArrayId {
     // arrayIds below should be synchromized with typedarray.js natives.
     ARRAY_ID_UINT8 = 1,
     ARRAY_ID_INT8 = 2,
     ARRAY_ID_UINT16 = 3,
     ARRAY_ID_INT16 = 4,
     ARRAY_ID_UINT32 = 5,
     ARRAY_ID_INT32 = 6,
@@ skipping 25 matching lines @@
 class AllocateTargetSpace : public BitField<AllocationSpace, 1, 3> {};
 
 class DeclareGlobalsEvalFlag : public BitField<bool, 0, 1> {};
 class DeclareGlobalsNativeFlag : public BitField<bool, 1, 1> {};
 class DeclareGlobalsStrictMode : public BitField<StrictMode, 2, 1> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_