[promises] Move PromiseReject to c++

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index ef63678e6df4034c0762254f6948ee18f9082f3b..4a81c57073c6a074fadfe0e072a97172f8aa347d 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -603,6 +603,14 @@ enum ParseRestriction {
   ONLY_SINGLE_FUNCTION_LITERAL  // Only a single FunctionLiteral expression.
 };
 
+// TODO(gsathya): Move this to JSPromise once we create it.
+// This should be in sync with the constants in promise.js
+enum PromiseStatus {
+  kPromisePending,
+  kPromiseFulfilled,
+  kPromiseRejected,
+};
+
 // A CodeDesc describes a buffer holding instructions and relocation
 // information. The instructions start at the beginning of the buffer
 // and grow forward, the relocation information starts at the end of