Enable QUIC for proxies based on Finch config and command line switch.

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 1f969ec4a63fce5acf8c46d0cb821f4e939e9454..21f6eb4a3dd0ce0144d5b6b6deaff3f4739fa86a 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -182,6 +182,7 @@ class IOThread : public content::BrowserThreadDelegate {
     Optional<double> alternate_protocol_probability_threshold;
 
     Optional<bool> enable_quic;
+    Optional<bool> enable_quic_proxy;

[Ryan Hamilton, 2015/02/08 16:56:36]

I think you mean enable_quic_for_proxies, or some such?

[tbansal1, 2015/02/10 19:46:04]

Done.

     Optional<bool> enable_quic_port_selection;
     Optional<bool> quic_always_require_handshake_confirmation;
     Optional<bool> quic_disable_connection_pooling;
@@ -329,6 +330,11 @@ class IOThread : public content::BrowserThreadDelegate {
       const base::CommandLine& command_line,
       base::StringPiece quic_trial_group);
 
+  // Returns true if QUIC should be enabled for proxies.

[bengr, 2015/02/07 01:48:48]

, either as a result of a field trial or a command line flag.

[tbansal1, 2015/02/10 19:46:04]

Done.

+  static bool ShouldEnableQuicForProxies(
+      const base::CommandLine& command_line,
+      base::StringPiece quic_trial_group);

[bengr, 2015/02/07 01:48:48]

quic_proxy_trial_group?

[tbansal1, 2015/02/10 19:46:04]

Done.

+
   // 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