Implement PPB_NetworkMonitor_Private Pepper interface.

webkit/plugins/ppapi/plugin_delegate.h

Index: webkit/plugins/ppapi/plugin_delegate.h
diff --git a/webkit/plugins/ppapi/plugin_delegate.h b/webkit/plugins/ppapi/plugin_delegate.h
index 985ff9864f7addef73a1226f688a1cfb7752a035..a336eb0219b264b9f61210021904d588811af32b 100644
--- a/webkit/plugins/ppapi/plugin_delegate.h
+++ b/webkit/plugins/ppapi/plugin_delegate.h
@@ -71,6 +71,7 @@ struct WebFileChooserParams;
 namespace webkit_glue {
 class ClipboardClient;
 class P2PTransport;
+class NetworkListObserver;
 }  // namespace webkit_glue
 
 namespace webkit {
@@ -479,6 +480,12 @@ class PluginDelegate {
   virtual void TCPServerSocketStopListening(uint32 real_socket_id,
                                             uint32 temp_socket_id) = 0;
 
+  // Add/remove a network list observer.
+  virtual bool AddNetworkListObserver(
+      webkit_glue::NetworkListObserver* observer) = 0;
+  virtual void RemoveNetworkListObserver(
+      webkit_glue::NetworkListObserver* observer) = 0;
+
   // Show the given context menu at the given position (in the plugin's
   // coordinates).
   virtual int32_t ShowContextMenu(