Remove support for Alt-Svc/Alternate Protocol Probability

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 75be4b64ede15f882b5319601d15b8a35c8a39bc..ba83de35d2351318492998ef9ed8445aec607b0d 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -66,12 +66,6 @@ const char kAllowOutdatedPlugins[]          = "allow-outdated-plugins";
 // URLs. This provides an override to get the old insecure behavior.
 const char kAllowRunningInsecureContent[]   = "allow-running-insecure-content";
 
-// Specifies the probability threshold for alternative services: an advertised
-// alternative service will only be honored if the advertised probability is
-// greater than or equal to this threshold.
-const char kAlternativeServiceProbabilityThreshold[] =
-    "alternative-service-probability-threshold";
-
 // Prevents Chrome from requiring authorization to run certain widely installed
 // but less commonly used plugins.
 const char kAlwaysAuthorizePlugins[]        = "always-authorize-plugins";