Move runtime helper for JSArrayBuffer onto objects.

test/unittests/compiler/js-typed-lowering-unittest.cc

Index: test/unittests/compiler/js-typed-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-typed-lowering-unittest.cc b/test/unittests/compiler/js-typed-lowering-unittest.cc
index 9d6cca3dbc0dac92ce539e0287fa7150db14832a..bd027af4fbafe18663bc2b365348ea6dccc0fd0e 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -88,7 +88,7 @@ class JSTypedLoweringTest : public TypedGraphTest {
 
   Handle<JSArrayBuffer> NewArrayBuffer(void* bytes, size_t byte_length) {
     Handle<JSArrayBuffer> buffer = factory()->NewJSArrayBuffer();
-    Runtime::SetupArrayBuffer(isolate(), buffer, true, bytes, byte_length);
+    JSArrayBuffer::Setup(buffer, isolate(), true, bytes, byte_length);
     return buffer;
   }