arc-bridge: Add the ARC Bridge Service

This adds the ARC bridge functionality and starts an ARC instance when
the user logs in.

BUG=b:24339743
BUG=554214
TEST=chromeos_unittests
TEST=ARC instance running on login

Review URL: https://codereview.chromium.org/1412863004

Cr-Commit-Position: refs/heads/master@{#359982}
diff --git a/components/arc/DEPS b/components/arc/DEPS
new file mode 100644
index 0000000..e2f3f79b
--- /dev/null
+++ b/components/arc/DEPS
@@ -0,0 +1,6 @@
+include_rules = [
+  "+chromeos/arc",
+  "+chromeos/chromeos_switches.h",
+  "+chromeos/dbus",
+  "+ipc",
+]