Add data reduction functionality to all platforms.

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 8559217696215011d52c245d80441f8a38d241d3..711aca8a54f540671aeb6c5651547f34b3c85712 100644
--- a/chrome/browser/io_thread.h
+++ b/chrome/browser/io_thread.h
@@ -37,12 +37,10 @@ namespace chrome_browser_net {
 class DnsProbeService;
 }
 
-#if defined(SPDY_PROXY_AUTH_ORIGIN)
 namespace data_reduction_proxy {
 class DataReductionProxyAuthRequestHandler;
 class DataReductionProxyParams;
 }
-#endif  // defined(SPDY_PROXY_AUTH_ORIGIN)
 
 namespace extensions {
 class EventRouterForwarder;
@@ -197,12 +195,10 @@ class IOThread : public content::BrowserThreadDelegate {
     // main frame load fails with a DNS error in order to provide more useful
     // information to the renderer so it can show a more specific error page.
     scoped_ptr<chrome_browser_net::DnsProbeService> dns_probe_service;
-#if defined(SPDY_PROXY_AUTH_ORIGIN)
   scoped_ptr<data_reduction_proxy::DataReductionProxyParams>
       data_reduction_proxy_params;
   scoped_ptr<data_reduction_proxy::DataReductionProxyAuthRequestHandler>
       data_reduction_proxy_auth_request_handler;
-#endif
   };
 
   // |net_log| must either outlive the IOThread or be NULL.
@@ -310,6 +306,9 @@ class IOThread : public content::BrowserThreadDelegate {
   // well as the QUIC field trial group.
   void ConfigureQuic(const base::CommandLine& command_line);
 
+  // Set up data reduction proxy related objects on IO thread globals.
+  void SetupDataReductionProxy(ChromeNetworkDelegate* network_delegate);
+
   extensions::EventRouterForwarder* extension_event_router_forwarder() {
 #if defined(ENABLE_EXTENSIONS)
     return extension_event_router_forwarder_;