Remove insecure QUIC support from Chromium.

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 2b4392524d072dc57941911e4531fdad317d3a89..6e747ac82afc7201de60cf4bf1533436eb3f5640 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -189,7 +189,6 @@ class IOThread : public content::BrowserThreadDelegate {
     Optional<double> alternative_service_probability_threshold;
 
     Optional<bool> enable_quic;
-    Optional<bool> enable_insecure_quic;
     Optional<bool> enable_quic_for_proxies;
     Optional<bool> enable_quic_port_selection;
     Optional<bool> quic_always_require_handshake_confirmation;
@@ -345,12 +344,6 @@ class IOThread : public content::BrowserThreadDelegate {
       base::StringPiece quic_trial_group,
       bool quic_allowed_by_policy);
 
-  // Returns true if QUIC should be enabled for http:// URLs, as a result
-  // of a field trial or command line flag.
-  static bool ShouldEnableInsecureQuic(
-      const base::CommandLine& command_line,
-      const VariationParameters& quic_trial_params);
-
   // Returns true if the selection of the ephemeral port in bind() should be
   // performed by Chromium, and false if the OS should select the port.  The OS
   // option is used to prevent Windows from posting a security security warning