Allow URLRequests from one context to have different NetworkDelegates.

net/url_request/url_request_throttler_entry.h

Index: net/url_request/url_request_throttler_entry.h
diff --git a/net/url_request/url_request_throttler_entry.h b/net/url_request/url_request_throttler_entry.h
index 88006e788b40927976ac440fc34bb09c8d19c9f2..a7a05244688e49edcb2e3cfdd3572759b71366d0 100644
--- a/net/url_request/url_request_throttler_entry.h
+++ b/net/url_request/url_request_throttler_entry.h
@@ -16,6 +16,7 @@
 
 namespace net {
 
+class NetworkDelegate;
 class URLRequestThrottlerManager;
 
 // URLRequestThrottlerEntry represents an entry of URLRequestThrottlerManager.
@@ -92,7 +93,9 @@ class NET_EXPORT URLRequestThrottlerEntry
   void DetachManager();
 
   // Implementation of URLRequestThrottlerEntryInterface.
-  virtual bool ShouldRejectRequest(const URLRequest& request) const OVERRIDE;
+  virtual bool ShouldRejectRequest(
+      const URLRequest& request,
+      NetworkDelegate* network_delegate) const OVERRIDE;
   virtual int64 ReserveSendingTimeForNextRequest(
       const base::TimeTicks& earliest_time) OVERRIDE;
   virtual base::TimeTicks GetExponentialBackoffReleaseTime() const OVERRIDE;