CHECK that URLRequestJobs are not orphaned while blocked by extensions.

net/base/network_delegate.cc

Index: net/base/network_delegate.cc
diff --git a/net/base/network_delegate.cc b/net/base/network_delegate.cc
index 82c0cf6d0f0615b17db7fffeb481eb45828a6798..745336f14253305d435e55bcf9abc06f86f6c541 100644
--- a/net/base/network_delegate.cc
+++ b/net/base/network_delegate.cc
@@ -118,6 +118,12 @@ void NetworkDelegate::NotifyURLRequestDestroyed(URLRequest* request) {
   OnURLRequestDestroyed(request);
 }
 
+void NetworkDelegate::NotifyURLRequestJobOrphaned(URLRequest* request) {
+  DCHECK(CalledOnValidThread());
+  DCHECK(request);
+  OnURLRequestJobOrphaned(request);
+}
+
 void NetworkDelegate::NotifyPACScriptError(int line_number,
                                            const base::string16& error) {
   DCHECK(CalledOnValidThread());