GN: Refactor modules_unittests to eliminate package boundary violations.

webrtc/modules/desktop_capture/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/ui.gni")
 import("../../build/webrtc.gni")
@@ skipping 15 matching lines @@
     "shared_memory.h",
   ]
 
   deps = [
     "../..:webrtc_common",
     "../../base:rtc_base",  # TODO(kjellander): Cleanup in bugs.webrtc.org/3806.
   ]
 }
 
 if (rtc_include_tests) {
+  rtc_source_set("desktop_capture_modules_tests") {
+    testonly = true
+    sources = []
+    deps = []
+    if (rtc_desktop_capture_supported) {
+      deps += [
+        ":desktop_capture_mock",
+        ":primitives",
+        ":screen_drawer",
+        "../../base:rtc_base",
+        "../../base:rtc_base_approved",
+        "../../system_wrappers:system_wrappers",
+        "../../test:test_support",
+      ]
+      sources += [
+        "screen_capturer_integration_test.cc",
+        "screen_drawer_unittest.cc",
+      ]
+    }
+  }
+
   rtc_source_set("desktop_capture_unittests") {
     testonly = true
     sources = []
     deps = []
     if (rtc_desktop_capture_supported || is_android) {
       deps += [
         ":desktop_capture",
         ":primitives",
         "../..:webrtc_common",
         "../../base:rtc_base_approved",
@@ skipping 233 matching lines @@
     sources = [
       "differ_vector_sse2.cc",
       "differ_vector_sse2.h",
     ]
 
     if (is_posix) {
       cflags = [ "-msse2" ]
     }
   }
 }