Libcore: Add filter upgrade function to DexFile

Expose a method to derive a non-profile-guided compiler filter from
a profile-guided version.

Bug: 27921071

(cherry picked from commit 1b7dfb091e0da13d4a7c9ac232e0c0f165b23ce3)

Change-Id: I54735b61732e6a5c9dc62425d04bc740dd365083
1 file changed