Add SafeBrowsingNavigationObserver to listen to navigation events

chrome/test/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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
@@ skipping 2311 matching lines @@
     if (enable_web_speech) {
       sources += [
         "../browser/speech/extension_api/tts_extension_apitest.cc",
         "../browser/speech/speech_recognition_browsertest.cc",
       ]
     }
     if (safe_browsing_mode == 1) {
       sources += [
         "../browser/safe_browsing/permission_reporter_browsertest.cc",
         "../browser/safe_browsing/safe_browsing_blocking_page_test.cc",
+        "../browser/safe_browsing/safe_browsing_navigation_observer_browsertest.cc",
         "../browser/safe_browsing/safe_browsing_service_browsertest.cc",
         "../renderer/safe_browsing/phishing_classifier_browsertest.cc",
         "../renderer/safe_browsing/phishing_classifier_delegate_browsertest.cc",
         "../renderer/safe_browsing/phishing_dom_feature_extractor_browsertest.cc",
         "../renderer/safe_browsing/threat_dom_details_browsertest.cc",
       ]
     }
     if (enable_captive_portal_detection) {
       sources += [ "../browser/captive_portal/captive_portal_browsertest.cc" ]
     }
@@ skipping 1362 matching lines @@
       "touch_hud",
       "ui",
     ]
 
     if (is_linux && !is_android) {
       deps += [ "//components/font_service:manifest" ]
       packaged_services += [ "font_service" ]
     }
   }
 }