Only notify extensions about the end of a network request when it started

chrome/browser/net/chrome_network_delegate.cc

Index: chrome/browser/net/chrome_network_delegate.cc
diff --git a/chrome/browser/net/chrome_network_delegate.cc b/chrome/browser/net/chrome_network_delegate.cc
index 8fd2976e149934d21be6e42ac73a1bc1ea23639f..bedcdd6c370f54a17f128a89234986e4b47ed4f2 100644
--- a/chrome/browser/net/chrome_network_delegate.cc
+++ b/chrome/browser/net/chrome_network_delegate.cc
@@ -535,7 +535,11 @@ void ChromeNetworkDelegate::OnCompleted(net::URLRequest* request,
     domain_reliability_monitor_->OnCompleted(request, started);
   RecordRequestSourceBandwidth(request, started);
   extensions_delegate_->ForwardProxyErrors(request);
-  extensions_delegate_->ForwardDoneRequestStatus(request);
+
+  // The ChromeExtensionNetworkDelegate only expects to be notified about the
+  // end of requests that were actually started.
+  if (started)
+    extensions_delegate_->ForwardDoneRequestStatus(request);
 }
 
 void ChromeNetworkDelegate::OnURLRequestDestroyed(net::URLRequest* request) {