Implement debugging local unlock keys in chrome://proximity-auth.

components/proximity_auth/bluetooth_connection.h

Index: components/proximity_auth/bluetooth_connection.h
diff --git a/components/proximity_auth/bluetooth_connection.h b/components/proximity_auth/bluetooth_connection.h
index affa5b2e1466cb0ca8c8bbbdb5efec7dbd576f43..8b39116a9e7a02511f5b039884051b41ab78882e 100644
--- a/components/proximity_auth/bluetooth_connection.h
+++ b/components/proximity_auth/bluetooth_connection.h
@@ -35,10 +35,12 @@ class BluetoothConnection : public Connection,
                       const device::BluetoothUUID& uuid);
   ~BluetoothConnection() override;
 
- protected:
   // Connection:
   void Connect() override;
   void Disconnect() override;
+
+ protected:
+  // Connection:
   void SendMessageImpl(scoped_ptr<WireMessage> message) override;
 
   // BluetoothAdapter::Observer: