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 a989118415d9e012be53f51dbe447e739365f57c..5b504f598ff4c1c0ca5d29d41bebbca814b628f8 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;
@@ -198,12 +196,10 @@ 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;

[mmenke, 2014/09/10 15:16:48]

Can we get rid of the SPDY_PROXY_AUTH_ORIGIN define entirely now (As in remove
it from the build system)?

[Not at Google. Contact bengr, 2014/09/10 21:38:34]

Yes, that is the plan. I have already removed it from chromium/src code. It
Needs to be removed from Android and iOS code as well as all the gyp files.
Filed bug http://crbug/412890

-#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
+    scoped_ptr<data_reduction_proxy::DataReductionProxyParams>
+        data_reduction_proxy_params;
+    scoped_ptr<data_reduction_proxy::DataReductionProxyAuthRequestHandler>
+        data_reduction_proxy_auth_request_handler;
   };
 
   // |net_log| must either outlive the IOThread or be NULL.
@@ -311,6 +307,9 @@ 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_;