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 3fbbe9ea0475a77def068621e0572f89d21a0c48..732ce9cb6e24d15a67ac0eaf704249926f14c25e 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -182,6 +182,8 @@ class IOThread : public content::BrowserThreadDelegate {
     Optional<double> alternate_protocol_probability_threshold;
 
     Optional<bool> enable_quic;
+    Optional<bool> enable_quic_for_proxies;
+    Optional<bool> enable_quic_for_data_reduction_proxy;

[Ryan Hamilton, 2015/02/13 21:39:04]

Can you remove this too?

[tbansal1, 2015/02/13 22:04:13]

IIUC: No, this is part of IOThread::Globals, which is used in
profile_impl_io_data.cc.

     Optional<bool> enable_quic_port_selection;
     Optional<bool> quic_always_require_handshake_confirmation;
     Optional<bool> quic_disable_connection_pooling;
@@ -330,6 +332,18 @@ class IOThread : public content::BrowserThreadDelegate {
       const base::CommandLine& command_line,
       base::StringPiece quic_trial_group);
 
+  // Returns true if QUIC should be enabled for proxies, either as a result
+  // of a field trial or a command line flag.
+  static bool ShouldEnableQuicForProxies(
+      const base::CommandLine& command_line,
+      base::StringPiece quic_trial_group);
+
+  // Returns true if QUIC should be enabled for data reduction proxy, either as
+  // a result of a field trial or a command line flag.
+  static bool ShouldEnableQuicForDataReductionProxy(
+      const base::CommandLine& command_line,
+      base::StringPiece quic_trial_group);
+
   // 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