Add a probability to Alternate-Protocol support.

net/http/http_stream_factory_impl_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/http/http_stream_factory_impl.h"
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 1255 matching lines @@
 
   // Now request a stream.
   HttpRequestInfo request_info;
   request_info.method = "GET";
   request_info.url = GURL("ws://www.google.com:8888");
   request_info.load_flags = 0;
 
   session->http_server_properties()->SetAlternateProtocol(
       HostPortPair("www.google.com", 8888),
       9999,
-      NPN_SPDY_3);
+      NPN_SPDY_3,
+      1);
 
   SSLConfig ssl_config;
   StreamRequestWaiter waiter;
   WebSocketStreamCreateHelper create_helper;
   scoped_ptr<HttpStreamRequest> request(
       session->http_stream_factory_for_websocket()
           ->RequestWebSocketHandshakeStream(request_info,
                                             DEFAULT_PRIORITY,
                                             ssl_config,
                                             ssl_config,
@@ skipping 21 matching lines @@
   EXPECT_TRUE(waiter.used_proxy_info().is_direct());
 
   // Make sure there is no orphaned job. it is already canceled.
   ASSERT_EQ(0u, static_cast<HttpStreamFactoryImpl*>(
       session->http_stream_factory_for_websocket())->num_orphaned_jobs());
 }
 
 }  // namespace
 
 }  // namespace net