make final constants static

found by findbugs
http://b/issue?id=1857033
diff --git a/core/java/android/webkit/HttpAuthHandler.java b/core/java/android/webkit/HttpAuthHandler.java
index 84dc9f0..1c17575 100644
--- a/core/java/android/webkit/HttpAuthHandler.java
+++ b/core/java/android/webkit/HttpAuthHandler.java
@@ -49,8 +49,8 @@
 
 
     // Message id for handling the user response
-    private final int AUTH_PROCEED = 100;
-    private final int AUTH_CANCEL = 200;
+    private static final int AUTH_PROCEED = 100;
+    private static final int AUTH_CANCEL = 200;
 
     /**
      * Creates a new HTTP authentication handler with an empty