GN: move webrtc/video/ targets from webrtc/BUILD.gn into webrtc/video/BUILD.gn

webrtc/test/BUILD.gn

 # Copyright (c) 2014 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("../build/webrtc.gni")
 import("//build/config/ui.gni")
@@ skipping 175 matching lines @@
   sources = [
     "testsupport/mac/run_threaded_main_mac.h",
     "testsupport/mac/run_threaded_main_mac.mm",
   ]
 
   deps = [
     ":test_support",
   ]
 }
 
+rtc_source_set("run_test") {
+  testonly = true
+  sources = [
+    "run_test.h",
+  ]
+  if (is_mac) {
+    sources += [ "mac/run_test.mm" ]
+  } else {
+    sources += [ "run_test.cc" ]
+  }
+}
+
 test_support_unittests_resources = [
   "//resources/foreman_cif_short.yuv",
   "//resources/video_coding/frame-ethernet-ii.pcap",
   "//resources/video_coding/frame-loopback.pcap",
   "//resources/video_coding/pltype103.rtp",
   "//resources/video_coding/pltype103_header_only.rtp",
   "//resources/video_coding/ssrcs-2.pcap",
   "//resources/video_coding/ssrcs-3.pcap",
 ]
 
@@ skipping 187 matching lines @@
     suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
   }
 
   deps = [
     ":test_support",
     ":video_test_common",
     "../modules/media_file",
     "//testing/gtest",
   ]
 }