Introduce api/crypto/BUILD.gn.

No-Try: True
Bug: webrtc:8733
Change-Id: I8679735be1e5069e371a9f1115a54e897e09964b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/152622
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29186}
diff --git a/audio/BUILD.gn b/audio/BUILD.gn
index dba7b58..bf8e253 100644
--- a/audio/BUILD.gn
+++ b/audio/BUILD.gn
@@ -41,9 +41,6 @@
     "../api:array_view",
     "../api:call_api",
     "../api:function_view",
-
-    # For api/crypto/crypto_options.h
-    "../api:libjingle_peerconnection_api",
     "../api:rtp_headers",
     "../api:rtp_parameters",
     "../api:scoped_refptr",
@@ -52,6 +49,9 @@
     "../api/audio:audio_frame_api",
     "../api/audio:audio_mixer_api",
     "../api/audio_codecs:audio_codecs_api",
+    "../api/crypto:frame_decryptor_interface",
+    "../api/crypto:frame_encryptor_interface",
+    "../api/crypto:options",
     "../api/rtc_event_log",
     "../api/task_queue",
     "../api/transport/media:media_transport_interface",