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

chrome/browser/net/chrome_extensions_network_delegate.cc

Index: chrome/browser/net/chrome_extensions_network_delegate.cc
diff --git a/chrome/browser/net/chrome_extensions_network_delegate.cc b/chrome/browser/net/chrome_extensions_network_delegate.cc
index 42fc490ba801194b944372d1be1f9e31b8e1c124..75c6f2b9a671835ae19642fc37a005df1d5b80a7 100644
--- a/chrome/browser/net/chrome_extensions_network_delegate.cc
+++ b/chrome/browser/net/chrome_extensions_network_delegate.cc
@@ -109,7 +109,6 @@ class ChromeExtensionsNetworkDelegateImpl
   void OnResponseStarted(net::URLRequest* request) override;
   void OnCompleted(net::URLRequest* request, bool started) override;
   void OnURLRequestDestroyed(net::URLRequest* request) override;
-  void OnURLRequestJobOrphaned(net::URLRequest* request) override;
   void OnPACScriptError(int line_number, const base::string16& error) override;
   net::NetworkDelegate::AuthRequiredResponse OnAuthRequired(
       net::URLRequest* request,
@@ -237,12 +236,6 @@ void ChromeExtensionsNetworkDelegateImpl::OnURLRequestDestroyed(
       profile_, request);
 }
 
-void ChromeExtensionsNetworkDelegateImpl::OnURLRequestJobOrphaned(
-    net::URLRequest* request) {
-  ExtensionWebRequestEventRouter::GetInstance()->OnURLRequestJobOrphaned(
-      profile_, request);
-}
-
 void ChromeExtensionsNetworkDelegateImpl::OnPACScriptError(
     int line_number,
     const base::string16& error) {
@@ -347,10 +340,6 @@ void ChromeExtensionsNetworkDelegate::OnURLRequestDestroyed(
     net::URLRequest* request) {
 }
 
-void ChromeExtensionsNetworkDelegate::OnURLRequestJobOrphaned(
-    net::URLRequest* request) {
-}
-
 void ChromeExtensionsNetworkDelegate::OnPACScriptError(
     int line_number,
     const base::string16& error) {