Fix ortc_api circular deps.

This will help keep ortc dependencies clean in the future, since
gn --check forces us to depend on components from which we include
headers.

cryptoparams.h moves into api/, but ortc appears to think it
should be there anyway. We could consider moving it into the ortc/ api,
but it doesn't appear to be specific to ortc.

Bug: webrtc:6828
Change-Id: Iddae438d10b5e84b2fbc52565364319e20f90613
Reviewed-on: https://webrtc-review.googlesource.com/22660
Commit-Queue: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20686}
diff --git a/p2p/BUILD.gn b/p2p/BUILD.gn
index ab1fd8a..431e217 100644
--- a/p2p/BUILD.gn
+++ b/p2p/BUILD.gn
@@ -135,6 +135,7 @@
     ]
     deps = [
       ":rtc_p2p",
+      "../api:libjingle_peerconnection_api",
       "../api:ortc_api",
       "../rtc_base:rtc_base",
       "../rtc_base:rtc_base_approved",