Move runtime helper for JSArrayBuffer onto objects.

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index afd09473ffb67488851983304332abc01c0a59ac..dcc010807e5c7801b9930f3dacdebf8f2a27d8b2 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -1083,9 +1083,6 @@ class RuntimeState {
 };
 
 
-class JavaScriptFrameIterator;  // Forward declaration.
-
-
 class Runtime : public AllStatic {
  public:
   enum FunctionId {
@@ -1156,17 +1153,6 @@ class Runtime : public AllStatic {
   MUST_USE_RESULT static MaybeHandle<Name> ToName(Isolate* isolate,
                                                   Handle<Object> key);
 
-  static void SetupArrayBuffer(Isolate* isolate,
-                               Handle<JSArrayBuffer> array_buffer,
-                               bool is_external, void* data,
-                               size_t allocated_length,
-                               SharedFlag shared = SharedFlag::kNotShared);
-
-  static bool SetupArrayBufferAllocatingData(
-      Isolate* isolate, Handle<JSArrayBuffer> array_buffer,
-      size_t allocated_length, bool initialize = true,
-      SharedFlag shared = SharedFlag::kNotShared);
-
   enum TypedArrayId {
     // arrayIds below should be synchronized with typedarray.js natives.
     ARRAY_ID_UINT8 = 1,