[ios] RootCoordinator and view controller.

ios/clean/chrome/browser/ui/root/BUILD.gn

Index: ios/clean/chrome/browser/ui/root/BUILD.gn
diff --git a/ios/clean/chrome/browser/ui/root/BUILD.gn b/ios/clean/chrome/browser/ui/root/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..f2e663e6ebb164bfc94ab40e90829910bfb1088a
--- /dev/null
+++ b/ios/clean/chrome/browser/ui/root/BUILD.gn
@@ -0,0 +1,31 @@
+# Copyright 2017 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.
+
+source_set("root") {
+  sources = [
+    "root_container_coordinator.h",
+    "root_container_coordinator.mm",
+  ]
+  deps = [
+    ":root_ui",
+    "//ios/clean/chrome/browser",
+    "//ios/clean/chrome/browser/ui/commands",
+    "//ios/clean/chrome/browser/ui/tab_grid",
+    "//ios/shared/chrome/browser/ui/browser_list",
+    "//ios/shared/chrome/browser/ui/commands",
+    "//ios/shared/chrome/browser/ui/coordinators",
+  ]
+  configs += [ "//build/config/compiler:enable_arc" ]
+}
+
+source_set("root_ui") {
+  sources = [
+    "root_container_view_controller.h",
+    "root_container_view_controller.mm",
+  ]
+  deps = [
+    "//ios/clean/chrome/browser/ui/animators",
+  ]
+  configs += [ "//build/config/compiler:enable_arc" ]
+}