Adds support for headless chrome embedder mojo services

headless/BUILD.gn

 # Copyright 2015 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("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 import("//tools/grit/repack.gni")
 
 config("headless_implementation") {
   defines = [ "HEADLESS_IMPLEMENTATION" ]
 }
 
 group("headless") {
   deps = [
@@ skipping 294 matching lines @@
     _stamp,
   ]
 
   script = "lib/browser/client_api_generator_unittest.py"
   args = [
     "--stamp",
     rebase_path(_stamp, root_build_dir),
   ]
 }
 
+mojom("embedder_mojo_for_testing") {
+  sources = [
+    "lib/embedder_test.mojom",
+  ]
+}
+
 test("headless_browsertests") {
   sources = [
+    "lib/embedder_mojo_browsertest.cc",
     "lib/headless_browser_browsertest.cc",
     "lib/headless_devtools_client_browsertest.cc",
     "lib/headless_web_contents_browsertest.cc",
     "test/headless_browser_test.cc",
     "test/headless_browser_test.h",
     "test/headless_test_launcher.cc",
   ]
 
   defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
 
   deps = [
+    ":embedder_mojo_for_testing",
     "//base",
     "//content/test:browsertest_base",
     "//content/test:test_support",
     "//headless:headless_lib",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }
 
 executable("headless_shell") {
   sources = [
     "app/headless_shell.cc",
     "app/headless_shell_switches.cc",
     "app/headless_shell_switches.h",
   ]
 
   deps = [
     "//headless:headless_lib",
   ]
 }