Consolidate iptables chain management.

Move creation and management of module iptables chains up into
CommandListener, which gives better visibility into ordering.

Change-Id: If0c94187c6e59a20840b035d7241057f45a0f74b
diff --git a/BandwidthController.h b/BandwidthController.h
index 10e6ca2..17017d2 100644
--- a/BandwidthController.h
+++ b/BandwidthController.h
@@ -80,6 +80,12 @@
      */
     int getTetherStats(TetherStats &stats, std::string &extraProcessingInfo);
 
+    static const char* LOCAL_INPUT;
+    static const char* LOCAL_FORWARD;
+    static const char* LOCAL_OUTPUT;
+    static const char* LOCAL_RAW_PREROUTING;
+    static const char* LOCAL_MANGLE_POSTROUTING;
+
 protected:
     class QuotaInfo {
     public: