Control TaskScheduler initialization params in renderers via field trial.

components/task_scheduler_util/renderer/BUILD.gn

Index: components/task_scheduler_util/renderer/BUILD.gn
diff --git a/components/task_scheduler_util/renderer/BUILD.gn b/components/task_scheduler_util/renderer/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..d40f79b4f3d2fd3d89f439c0cac678ea468f7037
--- /dev/null
+++ b/components/task_scheduler_util/renderer/BUILD.gn
@@ -0,0 +1,15 @@
+# Copyright 2016 The Chromium Authors. All rights reserved.

[robliao, 2017/01/03 08:00:01]

I guess it's time to change these to 2017. Happy New Year!

[fdoray, 2017/01/04 22:47:39]

Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+static_library("renderer") {
+  sources = [
+    "renderer/initialization.cc",
+    "renderer/initialization.h",
+  ]
+
+  deps = [
+    ":common",
+    "//base",
+  ]
+}