Merge "Support receiving broadcast for NetlinkManager"

diff --cc net/netlink_manager.h
index efcb8bd,d35217f..a5deca9
--- 1/net/netlink_manager.h
--- 2/net/netlink_manager.h
+++ b/net/netlink_manager.h
@@@ -68,9 -68,13 +68,13 @@@ class NetlinkManager 
    // Synchronous version of |RegisterHandlerAndSendMessage|.
    // Returns true on successfully receiving an valid reply.
    // Reply packets will be stored in |response|.
 -  bool SendMessageAndGetResponses(const NL80211Packet& packet,
 -                                  std::vector<NL80211Packet>* response);
 +  virtual bool SendMessageAndGetResponses(const NL80211Packet& packet,
 +                                          std::vector<NL80211Packet>* response);
  
+   // Sign-up to receive and log multicast events of a specific type.
+   // |group| is one of the string NL80211_MULTICAST_GROUP_* in nl80211.h.
+   virtual bool SubscribeToEvents(const std::string& group);
+ 
   private:
    bool SetupSocket(android::base::unique_fd* netlink_fd);
    bool WatchSocket(android::base::unique_fd* netlink_fd);