[automerger skipped] Merge "Add v3 signature matching support during apex...

[automerger skipped] Merge "Add v3 signature matching support during apex validation" am: 4284498a am: f6c36ccf -s ours am: 666c0951 -s ours am: 2c650a32 -s ours
am skip reason: Change-Id I7d0edb976c4228a26dd273d1c4b3d385d5acf906 with SHA-1 b884124b is in history

Change-Id: Icda375b780931ced786c72129ef123680974f858