Wrapped data reduction proxy initialization into its own class

components/data_reduction_proxy/core/browser/data_reduction_proxy_configurator.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_configurator.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_configurator.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_configurator.h
index 370ff80118f496973e54a8422448bd38e170994f..0300ed8b6ca0a768814293304011fe2c63c0df89 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_configurator.h
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_configurator.h
@@ -9,6 +9,10 @@
 
 #include "base/macros.h"
 
+namespace net {
+class ProxyConfig;
+}
+
 namespace data_reduction_proxy {
 
 // Interface for enabling and disabling the data reduction proxy configuration,
@@ -45,6 +49,9 @@ class DataReductionProxyConfigurator {
   // as a hostname pattern.
   virtual void AddURLPatternToBypass(const std::string& pattern) = 0;
 
+  // Returns the Data Reduction Proxy configuration.
+  virtual const net::ProxyConfig& GetProxyConfigOnIOThread() const = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyConfigurator);
 };