GN: Tighten up test target visibility + refactorings

webrtc/test/fuzzers/BUILD.gn

 # Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../../webrtc.gni")
 import("//build/config/features.gni")
@@ skipping 64 matching lines @@
   deps = [
     "../../modules/video_coding/",
   ]
 }
 
 webrtc_fuzzer_test("flexfec_header_reader_fuzzer") {
   sources = [
     "flexfec_header_reader_fuzzer.cc",
   ]
   deps = [
-    "../../modules/rtp_rtcp/",
+    "../../modules/rtp_rtcp",
   ]
 }
 
 webrtc_fuzzer_test("flexfec_sender_fuzzer") {
   sources = [
     "flexfec_sender_fuzzer.cc",
   ]
   deps = [
-    "../../modules/rtp_rtcp/",
+    "../../modules/rtp_rtcp",
   ]
   libfuzzer_options = [ "max_len=200" ]
 }
 
 webrtc_fuzzer_test("ulpfec_header_reader_fuzzer") {
   sources = [
     "ulpfec_header_reader_fuzzer.cc",
   ]
   deps = [
-    "../../modules/rtp_rtcp/",
+    "../../modules/rtp_rtcp",
+    "../../modules/rtp_rtcp:fec_test_helper",
   ]
 }
 
 webrtc_fuzzer_test("ulpfec_generator_fuzzer") {
   sources = [
     "ulpfec_generator_fuzzer.cc",
   ]
   deps = [
-    "../../modules/rtp_rtcp/",
+    "../../base:rtc_base_approved",
+    "../../modules/rtp_rtcp",
+    "../../modules/rtp_rtcp:fec_test_helper",
   ]
 }
 
 webrtc_fuzzer_test("flexfec_receiver_fuzzer") {
   sources = [
     "flexfec_receiver_fuzzer.cc",
   ]
   deps = [
-    "../../modules/rtp_rtcp/",
+    "../../modules/rtp_rtcp",
   ]
   libfuzzer_options = [ "max_len=2000" ]
 }
 
 webrtc_fuzzer_test("packet_buffer_fuzzer") {
   sources = [
     "packet_buffer_fuzzer.cc",
   ]
   deps = [
     "../../modules/video_coding/",
   ]
   libfuzzer_options = [ "max_len=2000" ]
 }
 
 webrtc_fuzzer_test("rtcp_receiver_fuzzer") {
   sources = [
     "rtcp_receiver_fuzzer.cc",
   ]
   deps = [
-    "../../modules/rtp_rtcp/",
+    "../../modules/rtp_rtcp",
   ]
   seed_corpus = "corpora/rtcp-corpus"
 }
 
 webrtc_fuzzer_test("rtp_packet_fuzzer") {
   sources = [
     "rtp_packet_fuzzer.cc",
   ]
   deps = [
-    "../../modules/rtp_rtcp/",
+    "../../modules/rtp_rtcp",
   ]
   seed_corpus = "corpora/rtp-corpus"
 }
 
 webrtc_fuzzer_test("rtp_header_fuzzer") {
   sources = [
     "rtp_header_fuzzer.cc",
   ]
   deps = [
-    "../../modules/rtp_rtcp/",
+    "../../modules/rtp_rtcp",
   ]
 }
 
 webrtc_fuzzer_test("congestion_controller_feedback_fuzzer") {
   sources = [
     "congestion_controller_feedback_fuzzer.cc",
   ]
   deps = [
     "../../logging:rtc_event_log_impl",
     "../../modules/congestion_controller/",
@@ skipping 131 matching lines @@
 
 webrtc_fuzzer_test("transport_feedback_packet_loss_tracker_fuzzer") {
   sources = [
     "transport_feedback_packet_loss_tracker_fuzzer.cc",
   ]
   deps = [
     "../../modules/rtp_rtcp",
     "../../voice_engine",
   ]
 }