Adds support for headless chrome embedder mojo services

headless/BUILD.gn

Index: headless/BUILD.gn
diff --git a/headless/BUILD.gn b/headless/BUILD.gn
index 8ebf07e9a9b460aaf61ac6328c03b25e7e971d63..02d0b3563b405b36e671be8b2d6bd059860580c7 100644
--- a/headless/BUILD.gn
+++ b/headless/BUILD.gn
@@ -2,6 +2,7 @@
 # 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")
@@ -25,6 +26,7 @@ repack("pak") {
     "$root_gen_dir/content/app/strings/content_strings_en-US.pak",
     "$root_gen_dir/content/browser/tracing/tracing_resources.pak",
     "$root_gen_dir/content/content_resources.pak",
+    "$root_gen_dir/headless/headless_browsertest_resources.pak",
     "$root_gen_dir/headless/headless_lib_resources.pak",
     "$root_gen_dir/net/net_resources.pak",
     "$root_gen_dir/ui/resources/ui_resources_100_percent.pak",
@@ -34,6 +36,7 @@ repack("pak") {
   ]
 
   deps = [
+    ":headless_browsertest_resources_grit",
     ":headless_lib_resources_grit",
     "//content:resources",
     "//content/app/resources",
@@ -316,8 +319,31 @@ action("client_api_generator_tests") {
   ]
 }
 
+mojom("embedder_mojo_for_testing") {
+  sources = [
+    "lib/embedder_test.mojom",
+  ]
+}
+
+grit("headless_browsertest_resources_grit") {
+  source = "lib/headless_browsertest_resources.grd"
+  outputs = [
+    "grit/headless_browsertest_resources.h",
+    "$root_gen_dir/headless/headless_browsertest_resources.pak",
+  ]
+  grit_flags = [
+    "-E",
+    "mojom_root=" + rebase_path(root_gen_dir),
+  ]
+  deps = [
+    ":embedder_mojo_for_testing__generator",
+  ]
+  resource_ids = "lib/headless_browsertest_resource_ids"
+}
+
 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",
@@ -329,6 +355,7 @@ test("headless_browsertests") {
   defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
 
   deps = [
+    ":embedder_mojo_for_testing",
     "//base",
     "//content/test:browsertest_base",
     "//content/test:test_support",