Remove static variables from HttpStreamFactory.

net/url_request/url_request_context.h

Index: net/url_request/url_request_context.h
diff --git a/net/url_request/url_request_context.h b/net/url_request/url_request_context.h
index 8e8e3cc902e499d98b25fa0d0a964bfa7c77e9b1..281cc6b010d6018c57103b3ae8ee9a2a4f99565a 100644
--- a/net/url_request/url_request_context.h
+++ b/net/url_request/url_request_context.h
@@ -20,6 +20,7 @@
 #include "net/base/net_log.h"
 #include "net/base/ssl_config_service.h"
 #include "net/base/transport_security_state.h"
+#include "net/http/http_network_session.h"
 #include "net/http/http_server_properties.h"
 #include "net/ftp/ftp_auth_cache.h"
 #include "net/url_request/url_request.h"
@@ -52,6 +53,10 @@ class NET_EXPORT URLRequestContext
   // Copies the state from |other| into this context.
   void CopyFrom(const URLRequestContext* other);
 
+  // If this context has an associated network session, populate params from the
+  // network session and return true.
+  bool GetReferenceParams(HttpNetworkSession::Params& params) const;
+
   URLRequest* CreateRequest(
       const GURL& url, URLRequest::Delegate* delegate) const;