Add data reduction functionality to all platforms.

net/proxy/proxy_service.h

Index: net/proxy/proxy_service.h
diff --git a/net/proxy/proxy_service.h b/net/proxy/proxy_service.h
index baca9da875a8add7ab78472be489d8f8f1bf5bfc..d295454f75ce3e307ef145a23078b13421ad01a4 100644
--- a/net/proxy/proxy_service.h
+++ b/net/proxy/proxy_service.h
@@ -217,6 +217,11 @@ class NET_EXPORT ProxyService : public NetworkChangeNotifier::IPAddressObserver,
   // to downloading and testing the PAC files.
   void ForceReloadProxyConfig();
 
+  // Sets URLs for data reduction proxy.
+  void SetDataReductionProxyOrigins(
+      const std::string& data_reduction_default_origin,
+      const std::string& data_reduction_default_fallback_origin);
+
   // Same as CreateProxyServiceUsingV8ProxyResolver, except it uses system
   // libraries for evaluating the PAC script if available, otherwise skips
   // proxy autoconfig.
@@ -484,6 +489,10 @@ class NET_EXPORT ProxyService : public NetworkChangeNotifier::IPAddressObserver,
   // Whether child ProxyScriptDeciders should use QuickCheck
   bool quick_check_enabled_;
 
+  // HostPortPair for data reduction proxy origin and fallback origin.
+  net::HostPortPair data_reduction_default_origin_;
+  net::HostPortPair data_reduction_default_fallback_origin_;
+
   DISALLOW_COPY_AND_ASSIGN(ProxyService);
 };