Display Alternate Protocol Probability Threshold in net-internals.

net/http/http_server_properties.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_SERVER_PROPERTIES_H_
 #define NET_HTTP_HTTP_SERVER_PROPERTIES_H_
 
 #include <map>
 #include <string>
 #include "base/basictypes.h"
@@ skipping 163 matching lines @@
 
   // Clears the Alternate-Protocol for |server|.
   virtual void ClearAlternateProtocol(const HostPortPair& server) = 0;
 
   // Returns all Alternate-Protocol mappings.
   virtual const AlternateProtocolMap& alternate_protocol_map() const = 0;
 
   virtual void SetAlternateProtocolExperiment(
       AlternateProtocolExperiment experiment) = 0;
 
+  // Sets the threshold to be used when evaluating Alternate-Protocol
+  // advertisments. Only advertisements with a with a probability
+  // greater than |threshold| will be honored. |threshold| must be
+  // between 0 and 1 inclusive. Hence, a threshold of 0 implies that
+  // all advertisements will be honored.
   virtual void SetAlternateProtocolProbabilityThreshold(
       double threshold) = 0;
 
   virtual AlternateProtocolExperiment GetAlternateProtocolExperiment()
       const = 0;
 
   // Gets a reference to the SettingsMap stored for a host.
   // If no settings are stored, returns an empty SettingsMap.
   virtual const SettingsMap& GetSpdySettings(
       const HostPortPair& host_port_pair) = 0;
@@ skipping 20 matching lines @@
   virtual const NetworkStats* GetServerNetworkStats(
       const HostPortPair& host_port_pair) const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(HttpServerProperties);
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_SERVER_PROPERTIES_H_