Adds FakeNetworkPipeTest to rtc_unittests.

Also updating the tests so they pass. The previous target was not part
of the targets that runs on the try bots, so they started breaking
during a recent refactor. By adding it to the common target we'll avoid
regression like this in the future.

Bug: None
Change-Id: I55391d454bd52964875818be39cdaa853360ae81
Reviewed-on: https://webrtc-review.googlesource.com/c/123199
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26820}
diff --git a/BUILD.gn b/BUILD.gn
index 4c10d66..58277ff 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -44,7 +44,6 @@
         ":video_engine_tests",
         ":webrtc_nonparallel_tests",
         ":webrtc_perf_tests",
-        "call:fake_network_unittests",
         "common_audio:common_audio_unittests",
         "common_video:common_video_unittests",
         "examples:examples_unittests",
@@ -484,6 +483,7 @@
       "api/audio_codecs/test:audio_codecs_api_unittests",
       "api/video/test:rtc_api_video_unittests",
       "api/video_codecs/test:video_codecs_api_unittests",
+      "call:fake_network_pipe_unittests",
       "p2p:libstunprober_unittests",
       "p2p:rtc_p2p_unittests",
       "rtc_base:rtc_base_approved_unittests",