Disable fallback support for alternative data reduction proxy

components/data_reduction_proxy/browser/data_reduction_proxy_params.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_PARAMS_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_PARAMS_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 33 matching lines @@
 // the necessary DNS names to configure use of the data reduction proxy.
 class DataReductionProxyParams {
  public:
   // Flags used during construction that specify if the data reduction proxy
   // is allowed to be used, if the fallback proxy is allowed to be used, if
   // an alternative set of proxies is allowed to be used, if the promotion is
   // allowed to be shown, and if this instance is part of a holdback experiment.
   static const unsigned int kAllowed = (1 << 0);
   static const unsigned int kFallbackAllowed = (1 << 1);
   static const unsigned int kAlternativeAllowed = (1 << 2);
-  static const unsigned int kPromoAllowed = (1 << 3);
-  static const unsigned int kHoldback = (1 << 4);
+  static const unsigned int kAlternativeFallbackAllowed = (1 << 3);
+  static const unsigned int kPromoAllowed = (1 << 4);
+  static const unsigned int kHoldback = (1 << 5);
 
   typedef std::vector<GURL> DataReductionProxyList;
 
   // Returns true if this client is part of the data reduction proxy field
   // trial.
   static bool IsIncludedInFieldTrial();
 
   // Returns true if this client is part of field trial to use an alternative
   // configuration for the data reduction proxy.
   static bool IsIncludedInAlternativeFieldTrial();
@@ skipping 136 matching lines @@
   bool fallback_allowed() const {
     return fallback_allowed_;
   }
 
   // Returns true if the alternative data reduction proxy configuration may be
   // used.
   bool alternative_allowed() const {
     return alt_allowed_;
   }
 
+  // Returns true if the alternative fallback data reduction proxy
+  // configuration may be used.
+  bool alternative_fallback_allowed() const {
+    return alt_fallback_allowed_;
+  }
+
   // Returns true if the data reduction proxy promo may be shown.
   // This is idependent of whether the data reduction proxy is allowed.
   // TODO(bengr): maybe tie to whether proxy is allowed.
   bool promo_allowed() const {
     return promo_allowed_;
   }
 
   // Returns true if the data reduction proxy should not actually use the
   // proxy if enabled.
   bool holdback() const {
@@ skipping 12 matching lines @@
  protected:
   // Test constructor that optionally won't call Init();
   DataReductionProxyParams(int flags,
                            bool should_call_init);
 
   DataReductionProxyParams(const DataReductionProxyParams& params);
 
   // Initialize the values of the proxies, and probe URL, from command
   // line flags and preprocessor constants, and check that there are
   // corresponding definitions for the allowed configurations.
-  bool Init(bool allowed, bool fallback_allowed, bool alt_allowed);
+  bool Init(bool allowed,
+            bool fallback_allowed,
+            bool alt_allowed,
+            bool alt_fallback_allowed);
 
   // Initialize the values of the proxies, and probe URL from command
   // line flags and preprocessor constants.
   void InitWithoutChecks();
 
   // Returns the corresponding string from preprocessor constants if defined,
   // and an empty string otherwise.
   virtual std::string GetDefaultDevOrigin() const;
   virtual std::string GetDefaultDevFallbackOrigin() const;
   virtual std::string GetDefaultOrigin() const;
@@ skipping 21 matching lines @@
   GURL fallback_origin_;
   GURL ssl_origin_;
   GURL alt_origin_;
   GURL alt_fallback_origin_;
   GURL probe_url_;
   GURL warmup_url_;
 
   bool allowed_;
   bool fallback_allowed_;
   bool alt_allowed_;
+  bool alt_fallback_allowed_;
   bool promo_allowed_;
   bool holdback_;
 
   bool configured_on_command_line_;
 };
 
 }  // namespace data_reduction_proxy
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_PARAMS_H_