debugd: Add GetNetworkInterfaces functionality.

chromeos/dbus/debug_daemon_client.h

Index: chromeos/dbus/debug_daemon_client.h
diff --git a/chromeos/dbus/debug_daemon_client.h b/chromeos/dbus/debug_daemon_client.h
index 2cc7fc230ff08337217a7f1e8e5e57072a4b095b..07e52ba0b7b3ba6b031f1034da7c759dc34b90ec 100644
--- a/chromeos/dbus/debug_daemon_client.h
+++ b/chromeos/dbus/debug_daemon_client.h
@@ -43,22 +43,39 @@ class CHROMEOS_EXPORT DebugDaemonClient {
   virtual void SetDebugMode(const std::string& subsystem,
                             const SetDebugModeCallback& callback) = 0;
 
+  // Called once GetRoutes() is complete.
   typedef base::Callback<void(bool succeeded,
                               const std::vector<std::string>& routes)>
       GetRoutesCallback;
   virtual void GetRoutes(bool numeric, bool ipv6,
                          const GetRoutesCallback& callback) = 0;
 
+  // Called once GetNetworkStatus() is complete.
   typedef base::Callback<void(bool succeeded, const std::string& status)>
       GetNetworkStatusCallback;
 
+  // Gets information about network status as json.
   virtual void GetNetworkStatus(const GetNetworkStatusCallback& callback) = 0;
 
+  // Called once GetModemStatus() is complete.
   typedef base::Callback<void(bool succeeded, const std::string& status)>
       GetModemStatusCallback;
 
+  // Gets information about modem status as json.
   virtual void GetModemStatus(const GetModemStatusCallback& callback) = 0;
 
+  // Called once GetNetworkInterfaces() is complete. Takes two parameters:
+  // - succeeded: information was obtained successfully.
+  // - status: network interfaces information in json. For details, please refer
+  //   to http://gerrit.chromium.org/gerrit/#/c/28045/5/src/helpers/netif.cc
+  typedef base::Callback<void(bool succeeded, const std::string& status)>
+      GetNetworkInterfacesCallback;
+
+  // Gets information about network interfaces as json.
+  virtual void GetNetworkInterfaces(
+      const GetNetworkInterfacesCallback& callback) = 0;
+
+  // Called once GetAllLogs() is complete.
   typedef base::Callback<void(bool succeeded,
                               const std::map<std::string, std::string>& logs)>
       GetAllLogsCallback;