Simple fallback implementation.

chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h
index f066d661713d4b39fbef8b3e680667d43f6546dc..3cce13d48e10e7edd0761a43616acc430abf77d0 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h
@@ -75,6 +75,9 @@ class DataReductionProxySettings
   // Returns the URL of the data reduction proxy.
   std::string GetDataReductionProxyOrigin();
 
+  // Returns the URL of the fallback data reduction proxy.
+  std::string GetDataReductionProxyFallback();
+
   // Returns a configuration string for the proxy.
   std::string GetDataReductionProxyAuth();
 
@@ -113,8 +116,6 @@ class DataReductionProxySettings
   virtual PrefService* GetOriginalProfilePrefs();
   virtual PrefService* GetLocalStatePrefs();
 
-  std::string GetDataReductionProxyOriginHostPort();
-
   bool IsProxyOriginSetOnCommandLine();
   void GetContentLengths(unsigned int days,
                          int64* original_content_length,