Move EnableSpdy from HttpNetworkLayer to IOThread.

net/http/http_network_layer.h

Index: net/http/http_network_layer.h
diff --git a/net/http/http_network_layer.h b/net/http/http_network_layer.h
index d9eb676b989ba0810547b21e33623f8494019477..52e5ad602235f976842b063196231afdd23dca9b 100644
--- a/net/http/http_network_layer.h
+++ b/net/http/http_network_layer.h
@@ -36,15 +36,9 @@ class NET_EXPORT HttpNetworkLayer
   // when network session is shared.
   static HttpTransactionFactory* CreateFactory(HttpNetworkSession* session);
 
-  // Enable the spdy protocol.
-  // Without calling this function, SPDY is disabled.  The mode can be:
-  //   ""            : (default) SSL and compression are enabled, flow
-  //                   control disabled.
-  //   "no-ssl"      : disables SSL.
-  //   "no-compress" : disables compression.
-  //   "flow-control": enables flow control.
-  //   "none"        : disables both SSL and compression.
-  static void EnableSpdy(const std::string& mode);
+  // Forces an alternate protocol of SPDY/2 on port 443.
+  // TODO(rch): eliminate this method.
+  static void ForceAlternateProtocol();
 
   // HttpTransactionFactory methods:
   virtual int CreateTransaction(scoped_ptr<HttpTransaction>* trans,