Provide child/frame IDs for WebSocket handshake request

net/websockets/websocket_channel.h

Index: net/websockets/websocket_channel.h
diff --git a/net/websockets/websocket_channel.h b/net/websockets/websocket_channel.h
index 430897913a79594ba0e45d9571580cd5ab9a40d6..2f68b144ef6c65a56e79e7882eec75d0a30b0d78 100644
--- a/net/websockets/websocket_channel.h
+++ b/net/websockets/websocket_channel.h
@@ -33,6 +33,7 @@ namespace net {
 
 class NetLogWithSource;
 class IOBuffer;
+class URLRequest;
 class URLRequestContext;
 struct WebSocketHandshakeRequestInfo;
 struct WebSocketHandshakeResponseInfo;
@@ -226,6 +227,9 @@ class NET_EXPORT WebSocketChannel {
       const std::string& additional_headers,
       const WebSocketStreamRequestCreationCallback& callback);
 
+  // Called when a URLRequest is created for handshaking.
+  void OnCreateURLRequest(URLRequest* request);
+
   // Success callback from WebSocketStream::CreateAndConnectStream(). Reports
   // success to the event interface. May delete |this|.
   void OnConnectSuccess(std::unique_ptr<WebSocketStream> stream);