Update from chromium https://crrev.com/301315

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"
 #include "base/containers/mru_cache.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_export.h"
 #include "net/socket/next_proto.h"
 #include "net/spdy/spdy_framer.h"  // TODO(willchan): Reconsider this.
 
 namespace net {
 
-enum AlternateProtocolExperiment {
-  // 200 alternate_protocol servers are loaded (persisted 200 MRU servers).
-  ALTERNATE_PROTOCOL_NOT_PART_OF_EXPERIMENT = 0,
-  // 200 alternate_protocol servers are loaded (persisted 1000 MRU servers).
-  ALTERNATE_PROTOCOL_TRUNCATED_200_SERVERS,
-  // 1000 alternate_protocol servers are loaded (persisted 1000 MRU servers).
-  ALTERNATE_PROTOCOL_TRUNCATED_1000_SERVERS,
-};
-
 enum AlternateProtocolUsage {
   // Alternate Protocol was used without racing a normal connection.
   ALTERNATE_PROTOCOL_USAGE_NO_RACE = 0,
   // Alternate Protocol was used by winning a race with a normal connection.
   ALTERNATE_PROTOCOL_USAGE_WON_RACE = 1,
   // Alternate Protocol was not used by losing a race with a normal connection.
   ALTERNATE_PROTOCOL_USAGE_LOST_RACE = 2,
   // Alternate Protocol was not used because no Alternate-Protocol information
   // was available when the request was issued, but an Alternate-Protocol header
   // was present in the response.
   ALTERNATE_PROTOCOL_USAGE_MAPPING_MISSING = 3,
   // Alternate Protocol was not used because it was marked broken.
   ALTERNATE_PROTOCOL_USAGE_BROKEN = 4,
   // Maximum value for the enum.
   ALTERNATE_PROTOCOL_USAGE_MAX,
 };
 
-// Log a histogram to reflect |usage| and |alternate_protocol_experiment|.
-NET_EXPORT void HistogramAlternateProtocolUsage(
-    AlternateProtocolUsage usage,
-    AlternateProtocolExperiment alternate_protocol_experiment);
+// Log a histogram to reflect |usage|.
+NET_EXPORT void HistogramAlternateProtocolUsage(AlternateProtocolUsage usage);
 
 enum BrokenAlternateProtocolLocation {
   BROKEN_ALTERNATE_PROTOCOL_LOCATION_HTTP_STREAM_FACTORY_IMPL_JOB = 0,
   BROKEN_ALTERNATE_PROTOCOL_LOCATION_QUIC_STREAM_FACTORY = 1,
   BROKEN_ALTERNATE_PROTOCOL_LOCATION_HTTP_STREAM_FACTORY_IMPL_JOB_ALT = 2,
   BROKEN_ALTERNATE_PROTOCOL_LOCATION_HTTP_STREAM_FACTORY_IMPL_JOB_MAIN = 3,
   BROKEN_ALTERNATE_PROTOCOL_LOCATION_MAX,
 };
 
 // Log a histogram to reflect |location|.
@@ skipping 125 matching lines @@
 
   // Confirms that Alternate-Protocol for |server| is working.
   virtual void ConfirmAlternateProtocol(const HostPortPair& server) = 0;
 
   // 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;
 
   // Saves an individual SPDY setting for a host. Returns true if SPDY setting
   // is to be persisted.
   virtual bool SetSpdySetting(const HostPortPair& host_port_pair,
                               SpdySettingsIds id,
                               SpdySettingsFlags flags,
@@ skipping 24 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_