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

chrome/browser/profiles/profile_impl_io_data.cc

Index: chrome/browser/profiles/profile_impl_io_data.cc
diff --git a/chrome/browser/profiles/profile_impl_io_data.cc b/chrome/browser/profiles/profile_impl_io_data.cc
index e2cb0ec4ef3e10a0c01acdce32227b3e2d5591a7..8d07edd508b89a06e3078f6887bcbbc80382b78b 100644
--- a/chrome/browser/profiles/profile_impl_io_data.cc
+++ b/chrome/browser/profiles/profile_impl_io_data.cc
@@ -172,6 +172,11 @@ void ProfileImplIOData::Handle::Init(
 
   ChromeNetLog* const net_log = g_browser_process->io_thread()->net_log();
 
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
+  bool quic_enabled_for_proxies =
+      IOThread::ShouldEnableQuicForProxies(command_line,
+                                           IOThread::QuicFieldTrialName());
   io_data_->set_data_reduction_proxy_io_data(
       CreateDataReductionProxyChromeIOData(
           net_log, profile_, profile_->GetPrefs(),
@@ -179,11 +184,11 @@ void ProfileImplIOData::Handle::Init(
           BrowserThread::GetMessageLoopProxyForThread(
               BrowserThread::UI)).Pass());
 
-  DataReductionProxyChromeSettingsFactory::GetForBrowserContext(profile_)->
-      InitDataReductionProxySettings(io_data_->data_reduction_proxy_io_data(),
-                                     profile_->GetPrefs(),
-                                     g_browser_process->local_state(),
-                                     profile_->GetRequestContext());
+  DataReductionProxyChromeSettingsFactory::GetForBrowserContext(profile_)
+      ->InitDataReductionProxySettings(
+          io_data_->data_reduction_proxy_io_data(), profile_->GetPrefs(),
+          g_browser_process->local_state(), profile_->GetRequestContext(),
+          quic_enabled_for_proxies);
 }
 
 content::ResourceContext*