QUIC - don't load data from disk cache if alternate protocol map doesn't

chrome/browser/io_thread.h

Index: chrome/browser/io_thread.h
diff --git a/chrome/browser/io_thread.h b/chrome/browser/io_thread.h
index 0b2106edbfb957f1b6d9e0cd85e640eedc22b7a0..2209f55b5c132d3bfb607d4f9ce7305c4656b197 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -192,6 +192,7 @@ class IOThread : public content::BrowserThreadDelegate {
     Optional<bool> quic_always_require_handshake_confirmation;
     Optional<bool> quic_disable_connection_pooling;
     Optional<int> quic_load_server_info_timeout_ms;
+    Optional<bool> quic_load_server_info_if_already_spoke_quic;

[ramant (doing other things), 2014/12/18 18:37:03]

hi Ryan,
  I am not sure about the name. Would appreciate better name.

thanks.

[Ryan Hamilton, 2014/12/18 19:19:12]

Hm. Good question. To be clear this controls if we should read from the disk
cache when the server is not in HSP. If it *is* in HSP, then we always read,
regardless of the value of this flag.

I'd be inclined to name it something like:

quic_load_server_info_for_unlikely_servers

or perhaps "new_servers" or some such?

[ramant (doing other things), 2014/12/18 20:51:10]

Thanks Ryan for the above suggestion. Renamed the variable.

Done.

     Optional<size_t> quic_max_packet_length;
     net::QuicTagVector quic_connection_options;
     Optional<std::string> quic_user_agent_id;
@@ -371,6 +372,11 @@ class IOThread : public content::BrowserThreadDelegate {
   static int GetQuicLoadServerInfoTimeout(
       const VariationParameters& quic_trial_params);
 
+  // Returns true if QUIC sever information shouldn't be loaded from disk cache
+  // base on field trial.
+  static bool ShouldQuicLoadServerInfoIfAlreadySpokeQuic(
+      const VariationParameters& quic_trial_params);
+
   // Returns the maximum length for QUIC packets, based on any flags in
   // |command_line| or the field trial.  Returns 0 if there is an error
   // parsing any of the options, or if the default value should be used.