Certificate Transparency DNS log client

This can query CT logs over DNS, as defined by:
https://github.com/google/certificate-transparency-rfcs/blob/master/dns/draft-ct-over-dns.md

This is required for obtaining audit proofs, which will allow Chrome to verify
that SCTs it receives are trustworthy and that logs are behaving correctly.

BUG=612439

Committed: https://crrev.com/59b6ea2217dbc10400b6a9d433ad13c91bb6b7c2
Review-Url: https://codereview.chromium.org/2066553002
Cr-Original-Commit-Position: refs/heads/master@{#403798}
Cr-Commit-Position: refs/heads/master@{#404199}
diff --git a/components/certificate_transparency/DEPS b/components/certificate_transparency/DEPS
index b3d5f275..575b1501 100644
--- a/components/certificate_transparency/DEPS
+++ b/components/certificate_transparency/DEPS
@@ -1,7 +1,9 @@
 include_rules = [
+  "+components/base32",
   "+components/prefs",
   "+components/safe_json",
   "+components/url_formatter",
   "+components/url_matcher",
+  "+crypto",
   "+net",
 ]