Move blink scheduler implementation into a component

components/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/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//tools/grit/repack.gni")
 
 # Collection of all components. You wouldn't link to this, but this is rather
@@ skipping 206 matching lines @@
     deps += [
       "//components/copresence",
       "//components/storage_monitor",
     ]
   }
 
   if (!is_ios) {
     deps += [
       "//components/app_modal",
       "//components/browsing_data",
+      "//components/scheduler",
     ]
   }
 
   if (toolkit_views) {
     deps += [ "//components/constrained_window" ]
   }
 }
 
 # To add a unit test to this target, make a "unit_test" source_set in your
 # component (it's important to use a source_set instead of a static library or
@@ skipping 62 matching lines @@
   if (toolkit_views) {
     # TODO(GYP) enable this as above.
     #deps += [ "//components/constrained_window:unit_tests" ]
   }
   if (is_win) {
     deps += [ "//components/browser_watcher:unit_tests" ]
   }
   if (is_ios) {
     deps -= [ "//components/devtools_http_handler:unit_tests" ]
   }
+
+  if (!is_ios) {
+    deps += [ "//components/scheduler:unit_tests" ]
+  }
 }
 
 repack("components_tests_pak") {
   sources = [
     "$root_gen_dir/components/components_resources.pak",
     "$root_gen_dir/components/strings/components_strings_en-US.pak",
     "$root_gen_dir/ui/resources/ui_resources_100_percent.pak",
     "$root_gen_dir/ui/resources/webui_resources.pak",
     "$root_gen_dir/ui/strings/app_locale_settings_en-US.pak",
     "$root_gen_dir/ui/strings/ui_strings_en-US.pak",
@@ skipping 53 matching lines @@
     sources += [ "dom_distiller/standalone/content_extractor_browsertest.cc" ]
     deps += [
       "pref_registry:test_support",
       "//base:prefs_test_support",
     ]
   }
 }
 
 test("components_perftests") {
   sources = [
+    "scheduler/child/task_queue_manager_perftest.cc",
     "visitedlink/test/visitedlink_perftest.cc",
   ]
 
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps = [
     "//base",
     "//base/test:test_support_perf",
     "//testing/gtest",
+    "//testing/perf",
     "//content/test:test_support",
     "//components/visitedlink/browser",
   ]
 }