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

chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
index 1297c623d29fc3aee810d8cd2f9a392bf8b5c1a8..acc2f43f3d158b24b2accbb2a37280a33a5876e2 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.cc
@@ -8,6 +8,7 @@
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/io_thread.h"
 #include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
 #include "chrome/browser/prefs/proxy_prefs.h"
 #include "chrome/browser/profiles/profile.h"
@@ -70,13 +71,13 @@ void DataReductionProxyChromeSettings::InitDataReductionProxySettings(
     data_reduction_proxy::DataReductionProxyIOData* io_data,
     PrefService* profile_prefs,
     PrefService* local_state_prefs,
-    net::URLRequestContextGetter* request_context) {
+    net::URLRequestContextGetter* request_context,
+    bool quic_enabled_for_proxies) {
   SetProxyConfigurator(io_data->configurator());
   DataReductionProxySettings::InitDataReductionProxySettings(
-      profile_prefs,
-      request_context,
-      io_data->net_log(),
-      io_data->event_store());
+      profile_prefs, request_context, io_data->net_log(),
+      io_data->event_store(), quic_enabled_for_proxies);
+
   DataReductionProxySettings::SetOnDataReductionEnabledCallback(
       base::Bind(&DataReductionProxyChromeSettings::RegisterSyntheticFieldTrial,
                  base::Unretained(this)));