[mojo-edk] Broadcast surprise port disruptions

mojo/edk/system/ports/node_delegate.h

Index: mojo/edk/system/ports/node_delegate.h
diff --git a/mojo/edk/system/ports/node_delegate.h b/mojo/edk/system/ports/node_delegate.h
index 7e15e7ea75e0cd196f0f9eeda6920caebd6c5f12..8547302a5e826e78fe16f3a272672d4b2b9406a0 100644
--- a/mojo/edk/system/ports/node_delegate.h
+++ b/mojo/edk/system/ports/node_delegate.h
@@ -32,6 +32,9 @@ class NodeDelegate {
   // NOT synchronously call any methods on Node.
   virtual void ForwardMessage(const NodeName& node, ScopedMessage message) = 0;
 
+  // Broadcast a message to all nodes.
+  virtual void BroadcastMessage(ScopedMessage message) = 0;
+
   // Indicates that the port's status has changed recently. Use Node::GetStatus
   // to query the latest status of the port. Note, this event could be spurious
   // if another thread is simultaneously modifying the status of the port.