Make the default alternate protcol probability threshold 1, not 0.

net/http/http_server_properties_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_server_properties_impl.h"
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 236 matching lines @@
   ASSERT_TRUE(impl_.HasAlternateProtocol(test_host_port_pair));
   const AlternateProtocolInfo alternate =
       impl_.GetAlternateProtocol(test_host_port_pair);
   EXPECT_EQ(443, alternate.port);
   EXPECT_EQ(NPN_SPDY_3, alternate.protocol);
 
   impl_.Clear();
   EXPECT_FALSE(impl_.HasAlternateProtocol(test_host_port_pair));
 }
 
+TEST_F(AlternateProtocolServerPropertiesTest, DefaultProbabilityExcluded) {
+  HostPortPair test_host_port_pair("foo", 80);
+  impl_.SetAlternateProtocol(test_host_port_pair, 443, NPN_SPDY_3, .99);
+
+  EXPECT_FALSE(impl_.HasAlternateProtocol(test_host_port_pair));
+}
+
 TEST_F(AlternateProtocolServerPropertiesTest, Probability) {
   impl_.SetAlternateProtocolProbabilityThreshold(.25);
 
   HostPortPair test_host_port_pair("foo", 80);
   impl_.SetAlternateProtocol(test_host_port_pair, 443, NPN_SPDY_3, .5);
 
   ASSERT_TRUE(impl_.HasAlternateProtocol(test_host_port_pair));
   const AlternateProtocolInfo alternate =
       impl_.GetAlternateProtocol(test_host_port_pair);
   EXPECT_EQ(443, alternate.port);
@@ skipping 401 matching lines @@
   it1_ret = settings_map1_it_ret.find(id1);
   EXPECT_TRUE(it1_ret != settings_map1_it_ret.end());
   flags_and_value1_ret = it1_ret->second;
   EXPECT_EQ(SETTINGS_FLAG_PERSISTED, flags_and_value1_ret.first);
   EXPECT_EQ(value1, flags_and_value1_ret.second);
 }
 
 }  // namespace
 
 }  // namespace net