arc: bluetooth: Set advertisement max slot to 1

components/arc/bluetooth/arc_bluetooth_bridge.h

Index: components/arc/bluetooth/arc_bluetooth_bridge.h
diff --git a/components/arc/bluetooth/arc_bluetooth_bridge.h b/components/arc/bluetooth/arc_bluetooth_bridge.h
index f3a3c66d0e6b64e0fd4b1376542ae1e0319bcf3e..87ba1142bd0d9b3f2bd8baaabc44fcde02b9f1e3 100644
--- a/components/arc/bluetooth/arc_bluetooth_bridge.h
+++ b/components/arc/bluetooth/arc_bluetooth_bridge.h
@@ -472,7 +472,9 @@ class ArcBluetoothBridge
   // * mapped to nullptr -> reserved, awaiting data
   // * mapped to a device::BluetoothAdvertisement -> in use, and the mapped
   //   BluetoothAdvertisement is currently registered with the adapter.
-  enum { kMaxAdvertisements = 5 };
+  // TODO(crbug.com/658385) Change back to 5 when we support setting signal
+  // strength per each advertisement slot.
+  enum { kMaxAdvertisements = 1 };
   std::map<int32_t, scoped_refptr<device::BluetoothAdvertisement>>
       advertisements_;