Add Finch experiment for selectively bypassing proxies.

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 29 matching lines @@
   static bool IsIncludedInAlternativeFieldTrial();
 
   // Returns true if this client is part of the field trial that should display
   // a promotion for the data reduction proxy.
   static bool IsIncludedInPromoFieldTrial();
 
   // Returns true if this client is part of a field trial that uses preconnect
   // hinting.
   static bool IsIncludedInPreconnectHintingFieldTrial();
 
+  // Returns true if this client is part of a field trial that bypasses the
+  // proxy if the request resource type is on the critical path (e.g. HTML).
+  static bool IsIncludedInCriticalPathBypassFieldTrial();
+
   // Constructs configuration parameters. If |kAllowed|, then the standard
   // data reduction proxy configuration is allowed to be used. If
   // |kfallbackAllowed| a fallback proxy can be used if the primary proxy is
   // bypassed or disabled. If |kAlternativeAllowed| then an alternative proxy
   // configuration is allowed to be used. This alternative configuration would
   // replace the primary and fallback proxy configurations if enabled. Finally
   // if |kPromoAllowed|, the client may show a promotion for the data reduction
   // proxy.
   //
   // A standard configuration has a primary proxy, and a fallback proxy for
@@ skipping 135 matching lines @@
   bool alt_allowed_;
   const bool promo_allowed_;
 
   bool configured_on_command_line_;
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyParams);
 };
 
 }  // namespace data_reduction_proxy
 #endif  // COMPONENTS_DATA_REDUCTION_PROXY_BROWSER_DATA_REDUCTION_PROXY_PARAMS_H_