arc: Abort booting ARC if the device is critically low on disk space.

components/arc/arc_bridge_service.h

Index: components/arc/arc_bridge_service.h
diff --git a/components/arc/arc_bridge_service.h b/components/arc/arc_bridge_service.h
index 186800bc261a65ebe921f6f4ff0b3210f96ca529..94ea3a0f457c7c621c473d057af8050bdf1d8922 100644
--- a/components/arc/arc_bridge_service.h
+++ b/components/arc/arc_bridge_service.h
@@ -39,6 +39,9 @@ class ArcBridgeService : public mojom::ArcBridgeHost {
     // failures on bootstrapping IPC channels with Android.
     GENERIC_BOOT_FAILURE,
 
+    // The device is critically low on disk space.
+    LOW_DISK_SPACE,
+
     // ARC instance has crashed.
     CRASH,
   };