Adding macro to enable changing SSL library (Part 1)

This changes the macro used to be USE_NSS_VERIFIER and modifies build
files to no longer assume iOS is using NSS.

BUG=591545

Review URL: https://codereview.chromium.org/1808963004

Cr-Original-Commit-Position: refs/heads/master@{#382077}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: a1714ab3703201b3a3c424fa42788f0e4d060b26
1 file changed
tree: 24ec4e8055f65e15470ea2c75057762b9dd074df
  1. tools/