Headless: make URLRequestDispatcher aware of navigations

headless/BUILD.gn

Index: headless/BUILD.gn
diff --git a/headless/BUILD.gn b/headless/BUILD.gn
index 7f155ee2e080e1c520781bb5822be8ac047a6ac9..789153683f8ac8363719f68c955a804d3c530858 100644
--- a/headless/BUILD.gn
+++ b/headless/BUILD.gn
@@ -217,6 +217,7 @@ static_library("headless_lib") {
               "public/util/in_memory_request_job.h",
               "public/util/managed_dispatch_url_request_job.cc",
               "public/util/managed_dispatch_url_request_job.h",
+              "public/util/navigation_request.h",
               "public/util/testing/generic_url_request_mocks.cc",
               "public/util/testing/generic_url_request_mocks.h",
               "public/util/url_fetcher.cc",
@@ -360,8 +361,11 @@ test("headless_browsertests") {
 static_library("headless_shell_lib") {
   sources = [
     "app/headless_shell.cc",
+    "app/headless_shell.h",
     "app/headless_shell_switches.cc",
     "app/headless_shell_switches.h",
+    "app/shell_navigation_request.cc",
+    "app/shell_navigation_request.h",
     "public/headless_shell.h",
   ]