Rename methods and members and const variables to alternative service.

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 0ddcae19396575e7b5a390ae8b371661786dd299..f822a37714887bc3646b0429f070ec5151db3d5a 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -64,10 +64,10 @@ const char kAllowOutdatedPlugins[]          = "allow-outdated-plugins";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 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[] =
+// 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[] =
     "alternate-protocol-probability-threshold";
 
 // Prevents Chrome from requiring authorization to run certain widely installed