Stop using public_deps in ortc.

Bug: webrtc:8603
Change-Id: I32fa27ad53302ec04ac61b55228e5b74f16e7e56
No-Try: True
Reviewed-on: https://webrtc-review.googlesource.com/29000
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21041}

ortc/BUILD.gn

diff --git a/ortc/BUILD.gn b/ortc/BUILD.gn
index fa107c28..4c1d51b 100644
--- a/ortc/BUILD.gn
+++ b/ortc/BUILD.gn
@@ -34,6 +34,7 @@
   # libjingle_peerconnection.
   deps = [
     "../api:optional",
+    "../api:ortc_api",
     "../call:call_interfaces",
     "../call:rtp_sender",
     "../logging:rtc_event_log_api",
@@ -47,10 +48,6 @@
     "../rtc_base:rtc_base_approved",
   ]
 
-  public_deps = [
-    "../api:ortc_api",
-  ]
-
   if (!build_with_chromium && is_clang) {
     # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
@@ -77,6 +74,7 @@
     deps = [
       ":ortc",
       "../api:libjingle_peerconnection_api",
+      "../api:ortc_api",
       "../api/audio_codecs:builtin_audio_decoder_factory",
       "../api/audio_codecs:builtin_audio_encoder_factory",
       "../media:rtc_media_tests_utils",