Fetch a warmup URL if data reduction proxy is enabled

components/data_reduction_proxy/core/common/data_reduction_proxy_params.h

Index: components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
diff --git a/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h b/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
index 4aea4d5ca5f91ec4a185aa7ba2dcc30be100b50d..bfdf16ec72c8051f75b1f741bbce1cee252964e0 100644
--- a/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
+++ b/components/data_reduction_proxy/core/common/data_reduction_proxy_params.h
@@ -148,6 +148,12 @@ bool GetOverrideProxiesForHttpFromCommandLine(
 // Returns the name of the server side experiment field trial.
 const char* GetServerExperimentsFieldTrialName();
 
+// Returns true if fetching of the warmup URL is enabled.
+bool FetchWarmupURLEnabled();
+
+// Returns the warmup URL.
+GURL GetWarmupURL();
+
 }  // namespace params
 
 // Contains information about a given proxy server. |proxies_for_http| contains
@@ -222,7 +228,6 @@ class DataReductionProxyParams : public DataReductionProxyConfigValues {
   virtual std::string GetDefaultOrigin() const;
   virtual std::string GetDefaultFallbackOrigin() const;
   virtual std::string GetDefaultSecureProxyCheckURL() const;
-  virtual std::string GetDefaultWarmupURL() const;
 
   std::vector<net::ProxyServer> proxies_for_http_;
 
@@ -231,7 +236,6 @@ class DataReductionProxyParams : public DataReductionProxyConfigValues {
   net::ProxyServer fallback_origin_;
 
   GURL secure_proxy_check_url_;
-  GURL warmup_url_;
 
   bool allowed_;
   bool fallback_allowed_;