QUIC - minor cleanup of the following field trials and used defaults for

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 c081e64df5eacfaaacb7cfc5059f4b314a9da5f8..6a8a8b3bc14f2137e1187b8ff86f209f50b37905 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -186,9 +186,7 @@ class IOThread : public content::BrowserThreadDelegate {
     Optional<bool> enable_quic_port_selection;
     Optional<bool> quic_always_require_handshake_confirmation;
     Optional<bool> quic_disable_connection_pooling;
-    Optional<int> quic_load_server_info_timeout_ms;
     Optional<float> quic_load_server_info_timeout_srtt_multiplier;
-    Optional<bool> quic_enable_truncated_connection_ids;
     Optional<bool> quic_enable_connection_racing;
     Optional<bool> quic_enable_non_blocking_io;
     Optional<bool> quic_disable_disk_cache;
@@ -366,22 +364,12 @@ class IOThread : public content::BrowserThreadDelegate {
   static bool ShouldQuicDisableConnectionPooling(
       const VariationParameters& quic_trial_params);
 
-  // Returns the timeout value for loading of QUIC sever information from disk
-  // cache based on field trial. Returns 0 if there is an error parsing the
-  // field trial params, or if the default value should be used.
-  static int GetQuicLoadServerInfoTimeout(
-      const VariationParameters& quic_trial_params);
-
   // Returns the ratio of time to load QUIC sever information from disk cache to
   // 'smoothed RTT' based on field trial. Returns 0 if there is an error parsing
   // the field trial params, or if the default value should be used.
   static float GetQuicLoadServerInfoTimeoutSrttMultiplier(
       const VariationParameters& quic_trial_params);
 
-  // Returns true if QUIC's TruncatedConnectionIds should be enabled.
-  static bool ShouldQuicEnableTruncatedConnectionIds(
-      const VariationParameters& quic_trial_params);
-
   // Returns true if QUIC's connection racing should be enabled.
   static bool ShouldQuicEnableConnectionRacing(
       const VariationParameters& quic_trial_params);