Remove HttpStreamFactory::spdy_enabled_ static member and accessors.

chrome/common/pref_names.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 "chrome/common/pref_names.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/pref_font_webkit_names.h"
 
@@ skipping 415 matching lines @@
 // next startup, based on what was actually needed during this startup.
 const char kDnsPrefetchingStartupList[] = "dns_prefetching.startup_list";
 
 // A list of host names used to fetch web pages, and their commonly used
 // sub-resource hostnames (and expected latency benefits from pre-resolving, or
 // preconnecting to, such sub-resource hostnames).
 // This list is adaptively grown and pruned.
 const char kDnsPrefetchingHostReferralList[] =
     "dns_prefetching.host_referral_list";
 
-// Disables the SPDY protocol.
+// Disables the SPDY/3.1 protocol.
+// DEPRECATED: SPDY/3.1 is not supported any more.

[mef, 2016/07/13 18:26:32]

Is there a separate setting to disable Http/2, or is it always on?

[Bence, 2016/07/15 20:35:33]

There is no enterprice policy to disable HTTP/2.  The reason is that HTTP/2 is
not an experimental feature: the RFC has been published more than a year ago,
and it is widely used.

This policy existed because SPDY was an experimental protocol.

 const char kDisableSpdy[] = "spdy.disabled";
 
 // Prefs for persisting HttpServerProperties.
 const char kHttpServerProperties[] = "net.http_server_properties";
 
 #if defined(OS_ANDROID)
 // Last time that a check for cloud policy management was done. This time is
 // recorded on Android so that retries aren't attempted on every startup.
 // Instead the cloud policy registration is retried at least 1 or 3 days later.
 const char kLastPolicyCheckTime[] = "policy.last_policy_check_time";
@@ skipping 1803 matching lines @@
 #endif
 
 // The base64-encoded representation of the public key to use to validate origin
 // trial token signatures.
 const char kOriginTrialPublicKey[] = "origin_trials.public_key";
 
 // A list of origin trial features to disable by policy.
 const char kOriginTrialDisabledFeatures[] = "origin_trials.disabled_features";
 
 }  // namespace prefs