Reland "Move FakeCodec to separate target and behave like real encoder."

Reland after fixes for ramp-up-tests

original reviewed on: https://webrtc-review.googlesource.com/95182

TBR=mbonadei@webrtc.org,ilnik@webrtc.org,sprang@webrtc.org,srte@webrtc.org,perkj@webrtc.org,titovartem@webrtc.org

Bug: none
Change-Id: I4f9af0c98a0341dd4fadd5184bb85d7511efbdc0
Reviewed-on: https://webrtc-review.googlesource.com/96120
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24450}
diff --git a/video/BUILD.gn b/video/BUILD.gn
index df3ba6d..a25b42d 100644
--- a/video/BUILD.gn
+++ b/video/BUILD.gn
@@ -362,6 +362,7 @@
       "../system_wrappers",
       "../system_wrappers:metrics_default",
       "../system_wrappers:runtime_enabled_features_default",
+      "../test:fake_video_codecs",
       "../test:field_trial",
       "../test:rtp_test_utils",
       "../test:run_test",
@@ -473,6 +474,7 @@
       "../system_wrappers:metrics_api",
       "../system_wrappers:metrics_default",
       "../test:direct_transport",
+      "../test:fake_video_codecs",
       "../test:field_trial",
       "../test:fileutils",
       "../test:perf_test",