HTMLSelectElement does not include selected index/indices while saving state

Source/core/html/forms/FormController.cpp

Index: Source/core/html/forms/FormController.cpp
diff --git a/Source/core/html/forms/FormController.cpp b/Source/core/html/forms/FormController.cpp
index 6b22bbab0393f83749a324be7ed610c1fc2a0034..4aaacb785abcced75386c76d9fd597f2f5d5d7dd 100644
--- a/Source/core/html/forms/FormController.cpp
+++ b/Source/core/html/forms/FormController.cpp
@@ -413,7 +413,7 @@ static String formStateSignature()
     // In the legacy version of serialized state, the first item was a name
     // attribute value of a form control. The following string literal should
     // contain some characters which are rarely used for name attribute values.
-    DEFINE_STATIC_LOCAL(String, signature, ("\n\r?% WebKit serialized form state version 8 \n\r=&"));
+    DEFINE_STATIC_LOCAL(String, signature, ("\n\r?% Blink serialized form state version 9 \n\r=&"));
     return signature;
 }