Revert of CHECK that URLRequestJobs are not orphaned while blocked by extensions.

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 507ce90fe75dfa9ee85944d36c53162a6f1d597e..8fd4f9bb1ffa69ece8a5fe5d652b8516e338d4c8 100644
--- a/chrome/browser/net/chrome_network_delegate.cc
+++ b/chrome/browser/net/chrome_network_delegate.cc
@@ -559,10 +559,6 @@ void ChromeNetworkDelegate::OnURLRequestDestroyed(net::URLRequest* request) {
   extensions_delegate_->OnURLRequestDestroyed(request);
 }
 
-void ChromeNetworkDelegate::OnURLRequestJobOrphaned(net::URLRequest* request) {
-  extensions_delegate_->OnURLRequestJobOrphaned(request);
-}
-
 void ChromeNetworkDelegate::OnPACScriptError(int line_number,
                                              const base::string16& error) {
   extensions_delegate_->OnPACScriptError(line_number, error);