[stubs] Introduce MultiplyStub.

src/code-factory.cc

Index: src/code-factory.cc
diff --git a/src/code-factory.cc b/src/code-factory.cc
index fbfdd5f644c1b921973b7472b28c66e3393d8f2d..1802479357037a1ebf681ee980f1540719d7e73f 100644
--- a/src/code-factory.cc
+++ b/src/code-factory.cc
@@ -225,6 +225,12 @@ Callable CodeFactory::Subtract(Isolate* isolate) {
 }
 
 // static
+Callable CodeFactory::Multiply(Isolate* isolate) {
+  MultiplyStub stub(isolate);
+  return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());
+}
+
+// static
 Callable CodeFactory::BitwiseAnd(Isolate* isolate) {
   BitwiseAndStub stub(isolate);
   return Callable(stub.GetCode(), stub.GetCallInterfaceDescriptor());