Add a probability to Alternate-Protocol support.

chrome/common/chrome_switches.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/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 34 matching lines @@
 // access to TCP/UDP socket APIs.
 const char kAllowNaClSocketAPI[]            = "allow-nacl-socket-api";
 
 // Don't block outdated plugins.
 const char kAllowOutdatedPlugins[]          = "allow-outdated-plugins";
 
 // By default, an https page cannot run JavaScript, CSS or plug-ins from http
 // URLs. This provides an override to get the old insecure behavior.
 const char kAllowRunningInsecureContent[]   = "allow-running-insecure-content";
 
+// Specifies the threshold to be used when determining of an Alternate-Protocol
+// advertisement will be honored. If the advertised probability is larger
+// than the threshold, then it will be honored.
+const char kAlternateProtocolProbabilityThreshold[] =
+    "alternate-protocol-probability-threshold";

[Lei Zhang, 2014/06/30 19:09:24]

Is "alternative protocol" too generic? Do you want quic in the name somewhere?

[Ryan Hamilton, 2014/06/30 21:33:01]

Alternate Protocol is actually not QUIC specific (it applies to any other
protocol like SPDY or HTTP2, as well) so I think QUIC probably does not belong
in the name.

+
 // Prevents Chrome from requiring authorization to run certain widely installed
 // but less commonly used plug-ins.
 const char kAlwaysAuthorizePlugins[]        = "always-authorize-plugins";
 
 // Specifies that the extension-app with the specified id should be launched
 // according to its configuration.
 const char kAppId[]                         = "app-id";
 
 // Specifies that the associated value should be launched in "application"
 // mode.
@@ skipping 1349 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches