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..605efdff41e04d212e1f1728ba818131a768e3ef 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 GURL& data_reduction_default_origin,
+      const GURL& data_reduction_default_fallback_origin);

[Ryan Sleevi, 2014/07/22 01:56:31]

Sorry, this is a layering violation.

[bengr, 2014/07/22 18:55:00]

I agree. Would you be ok with introducing a ProxyService delegate?

+
   // 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);
 };