Let's sprinkle some FastJNI into Resources.

Before:

               benchmark   us linear runtime
                GetColor 14.9 ===========
              GetInteger 19.9 ===============
    GetLayoutAndTraverse 38.4 =============================
               GetString 38.5 ==============================

After:

               benchmark   us linear runtime
                GetColor 13.9 ==========
              GetInteger 18.8 ==============
    GetLayoutAndTraverse 38.1 =============================
               GetString 38.2 ==============================

Change-Id: I8c20e14182d2645bc62a0e7fc6345e298b11933c