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

net/base/network_delegate.h

Index: net/base/network_delegate.h
diff --git a/net/base/network_delegate.h b/net/base/network_delegate.h
index fa266f5cd919c3c5da5b8fad174c0f7c6aca1d58..56b1545ebbf5c73fd62ef9fc84145a36db58c994 100644
--- a/net/base/network_delegate.h
+++ b/net/base/network_delegate.h
@@ -91,7 +91,6 @@ class NET_EXPORT NetworkDelegate : public base::NonThreadSafe {
   void NotifyNetworkBytesSent(URLRequest* request, int64_t bytes_sent);
   void NotifyCompleted(URLRequest* request, bool started);
   void NotifyURLRequestDestroyed(URLRequest* request);
-  void NotifyURLRequestJobOrphaned(URLRequest* request);
   void NotifyPACScriptError(int line_number, const base::string16& error);
   AuthRequiredResponse NotifyAuthRequired(URLRequest* request,
                                           const AuthChallengeInfo& auth_info,
@@ -233,13 +232,6 @@ class NET_EXPORT NetworkDelegate : public base::NonThreadSafe {
   // a virtual method call.
   virtual void OnURLRequestDestroyed(URLRequest* request) = 0;
 
-  // Called when the current job for |request| is orphaned. This is a temporary
-  // callback to diagnose https://crbug.com/289715 and may not be used for other
-  // purposes. Note that it may be called after OnURLRequestDestroyed.
-  //
-  // TODO(davidben): Remove this once data has been gathered.
-  virtual void OnURLRequestJobOrphaned(URLRequest* request) = 0;
-
   // Corresponds to ProxyResolverJSBindings::OnError.
   virtual void OnPACScriptError(int line_number,
                                 const base::string16& error) = 0;