Handle disabling data reduction proxy for all platforms.

chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_configurator.h

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_configurator.h
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_configurator.h b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_configurator.h
index 72051708f584d22c2c25363b4efefa6685496208..6dc13f2d58ebf05cf2ade5f692be54e205f59896 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_configurator.h
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_configurator.h
@@ -32,6 +32,8 @@ class DataReductionProxyChromeConfigurator
       scoped_refptr<base::SequencedTaskRunner> network_task_runner);
   ~DataReductionProxyChromeConfigurator() override;
 
+  static void Disable(PrefService* prefs);

[bengr, 2014/10/28 21:03:41]

Don't overload the name. Maybe call this DisableInProxyConfigPref, or something
like that.

[Not at Google. Contact bengr, 2014/10/28 22:31:44]

Done.

+
   void Enable(bool primary_restricted,
               bool fallback_restricted,
               const std::string& primary_origin,
@@ -61,6 +63,9 @@ class DataReductionProxyChromeConfigurator
  private:
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxyConfigTest, TestBypassList);
 
+  static bool ContainsDataReductionProxy(const std::string& server);
+  static bool HasProxy(const std::string& server, const GURL& proxy);
+
   PrefService* prefs_;
   scoped_refptr<base::SequencedTaskRunner> network_task_runner_;