GN: Refactor modules_unittests to eliminate package boundary violations.

webrtc/modules/video_processing/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/config/arm.gni")
 import("../../build/webrtc.gni")
@@ skipping 71 matching lines @@
       "util/denoiser_filter_neon.cc",
       "util/denoiser_filter_neon.h",
     ]
 
     if (current_cpu != "arm64") {
       suppressed_configs += [ "//build/config/compiler:compiler_arm_fpu" ]
       cflags = [ "-mfpu=neon" ]
     }
   }
 }
+
+if (rtc_include_tests) {
+  rtc_source_set("video_processing_unittests") {
+    testonly = true
+    sources = [
+      "test/denoiser_test.cc",
+    ]
+    deps = [
+      ":video_processing",
+      "../../common_video:common_video",
+      "../../test:test_support",
+      "../../test:video_test_common",
+    ]
+    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" ]
+    }
+  }
+}