[stubs] Introduce LeftShift, SignedRightShift and UnsignedRightShift stubs.

src/code-factory.h

Index: src/code-factory.h
diff --git a/src/code-factory.h b/src/code-factory.h
index 219685fc5668d93b54fcbbe370801b67ed6a836e..cd56c6dadc60dddf0a92b2b7864a85001d7e8f78 100644
--- a/src/code-factory.h
+++ b/src/code-factory.h
@@ -85,6 +85,9 @@ class CodeFactory final {
   static Callable Multiply(Isolate* isolate);
   static Callable Divide(Isolate* isolate);
   static Callable Modulus(Isolate* isolate);
+  static Callable SignedRightShift(Isolate* isolate);
+  static Callable UnsignedRightShift(Isolate* isolate);
+  static Callable LeftShift(Isolate* isolate);
   static Callable BitwiseAnd(Isolate* isolate);
   static Callable BitwiseOr(Isolate* isolate);
   static Callable BitwiseXor(Isolate* isolate);