Sync more GN unit tests with GYP.

components/navigation_interception/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
-static_library("navigation_interception") {
+source_set("navigation_interception") {
   sources = [
     "intercept_navigation_resource_throttle.cc",
     "intercept_navigation_resource_throttle.h",
     "navigation_params.cc",
     "navigation_params.h",
   ]
 
   deps = [
     "//base",
     "//content/public/browser",
@@ skipping 18 matching lines @@
 if (is_android) {
   # GYP: //components/navigation_interception.gypi:navigation_interception_jni_headers
   generate_jni("jni_headers") {
     sources = [
       "android/java/src/org/chromium/components/navigation_interception/InterceptNavigationDelegate.java",
       "android/java/src/org/chromium/components/navigation_interception/NavigationParams.java",
     ]
     jni_package = "navigation_interception"
   }
 }
+
+source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "intercept_navigation_resource_throttle_unittest.cc",
+  ]
+  deps = [
+    ":navigation_interception",
+    "//content/public/browser",
+    "//testing/gmock",
+    "//testing/gtest",
+  ]
+}