add customized printing setting for headless

headless/BUILD.gn

Index: headless/BUILD.gn
diff --git a/headless/BUILD.gn b/headless/BUILD.gn
index e67fbfb4ba0df6a63f88b45e0aee8cc9541e78d3..d46d16dd9b96a1e1751d51f18cf6c10151d4fbdc 100644
--- a/headless/BUILD.gn
+++ b/headless/BUILD.gn
@@ -29,6 +29,7 @@ repack("pak") {
   sources = [
     "$root_gen_dir/blink/public/resources/blink_image_resources_100_percent.pak",
     "$root_gen_dir/blink/public/resources/blink_resources.pak",
+    "$root_gen_dir/components/components_resources.pak",
     "$root_gen_dir/components/strings/components_strings_en-US.pak",
     "$root_gen_dir/content/app/resources/content_resources_100_percent.pak",
     "$root_gen_dir/content/app/strings/content_strings_en-US.pak",
@@ -51,6 +52,7 @@ repack("pak") {
 
   deps = [
     ":resources",
+    "//components/resources:components_resources",
     "//components/strings",
     "//content:resources",
     "//content/app/resources",
@@ -394,6 +396,10 @@ test("headless_unittests") {
     "public/util/testing/fake_managed_dispatch_url_request_job.h",
   ]
 
+  if (enable_basic_printing) {
+    sources += [ "lib/browser/headless_printing_unittest.cc" ]
+  }
+
   deps = [
     ":headless_lib",
     "//base/test:run_all_unittests",
@@ -401,6 +407,10 @@ test("headless_unittests") {
     "//testing/gmock",
     "//testing/gtest",
   ]
+
+  if (enable_basic_printing) {
+    deps += [ "//content/public/common" ]
+  }
 }
 
 mojom("embedder_mojo_for_testing") {
@@ -495,6 +505,10 @@ test("headless_browsertests") {
     "//testing/gmock",
     "//testing/gtest",
   ]
+
+  if (enable_basic_printing) {
+    deps += [ "//pdf" ]
+  }
 }
 
 static_library("headless_shell_lib") {