Fix nits related to SSLHostInfo.

net/socket/ssl_host_info.cc

Index: net/socket/ssl_host_info.cc
===================================================================
--- net/socket/ssl_host_info.cc	(revision 86506)
+++ net/socket/ssl_host_info.cc	(working copy)
@@ -94,16 +94,20 @@
     state->certs.push_back(der_cert);
   }
 
+  // Ignore obsolete members of the State structure.
   std::string throwaway_string;
   bool throwaway_bool;
+  // This was state->server_hello.
   if (!p.ReadString(&iter, &throwaway_string))
     return false;
 
+  // This was state->npn_valid.
   if (!p.ReadBool(&iter, &throwaway_bool))
     return false;
 
   if (throwaway_bool) {
     int throwaway_int;
+    // These were state->npn_status and state->npn_protocol.
     if (!p.ReadInt(&iter, &throwaway_int) ||
         !p.ReadString(&iter, &throwaway_string)) {
       return false;
@@ -161,6 +165,8 @@
       return "";
   }
 
+  // Write dummy values for obsolete members of the State structure:
+  // state->server_hello and state->npn_valid.
   if (!p.WriteString("") ||
       !p.WriteBool(false)) {
     return "";