New CPAT support in DataReductionProxyConfig guarded by feature flag.

components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h
index 51a04b8762af809f5b5d1649ce8f2691a55b7f6f..91f6fbff913b2c21ca4cb14d372b6eb29d21c91f 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h
@@ -19,6 +19,7 @@
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_server.h"
+#include "components/previews/core/previews_experiments.h"
 #include "net/base/net_errors.h"
 #include "net/base/network_change_notifier.h"
 #include "net/base/network_interfaces.h"
@@ -213,6 +214,11 @@ class DataReductionProxyConfig
   // saver proxy is reachable.
   bool enabled_by_user_and_reachable() const;
 
+  // Returns whether the request is blacklisted (or if Lo-Fi is disabled).
+  bool IsBlackListedOrDisabled(const net::URLRequest& request,
+                               previews::PreviewsDecider* previews_decider,
+                               previews::PreviewsType previews_type);
+
   // Gets the ProxyConfig that would be used ignoring the holdback experiment.
   // This should only be used for logging purposes.
   net::ProxyConfig ProxyConfigIgnoringHoldback() const;
@@ -254,6 +260,9 @@ class DataReductionProxyConfig
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxyConfigTest,
                            LoFiAccuracyNonZeroDelay);
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxyConfigTest, WarmupURL);
+  FRIEND_TEST_ALL_PREFIXES(DataReductionProxyConfigTest,
+                           ShouldAcceptServerLoFi);
+  FRIEND_TEST_ALL_PREFIXES(DataReductionProxyConfigTest, ShouldAcceptLitePages);
 
   // Values of the estimated network quality at the beginning of the most
   // recent query of the Network Quality Estimator.
@@ -300,11 +309,31 @@ class DataReductionProxyConfig
       bool is_https,
       base::TimeDelta* min_retry_delay) const;
 
+  // Returns whether the client should report to the data reduction proxy that
+  // it is willing to accept the Server Lo-Fi optimization for |request|.
+  // |previews_decider| is a non-null object that determines eligibility of the
+  // showing the preview based on past opt outs.
+  // Should only be used if the kDataReductionProxyDecidesTransform feature is
+  // enabled.
+  bool ShouldAcceptServerLoFi(const net::URLRequest& request,
+                              previews::PreviewsDecider* previews_decider);
+
+  // Returns whether the client should report to the data reduction proxy that
+  // it is willing to accept a LitePage optimization for |request|.
+  // |previews_decider| is a non-null object that determines eligibility of the
+  // showing the preview based on past opt outs.
+  // Should only be used if the kDataReductionProxyDecidesTransform feature is
+  // enabled.
+  bool ShouldAcceptLitePages(const net::URLRequest& request,
+                             previews::PreviewsDecider* previews_decider);
+
   // Returns true when Lo-Fi Previews should be activated. Determines if Lo-Fi
   // Previews should be activated by checking the Lo-Fi flags and if the network
   // quality is prohibitively slow. |network_quality_estimator| may be NULL.
   // |previews_decider| is a non-null object that determines eligibility of the
   // showing the preview based on past opt outs.
+  // Should NOT be used if the kDataReductionProxyDecidesTransform feature is
+  // enabled.
   bool ShouldEnableLoFiInternal(const net::URLRequest& request,
                                 previews::PreviewsDecider* previews_decider);
 
@@ -314,6 +343,8 @@ class DataReductionProxyConfig
   // |network_quality_estimator| may be NULL. |previews_decider| is a non-null
   // object that determines eligibility of showing the preview based on past opt
   // outs.
+  // Should NOT be used if the kDataReductionProxyDecidesTransform feature is
+  // enabled.
   bool ShouldEnableLitePagesInternal(
       const net::URLRequest& request,
       previews::PreviewsDecider* previews_decider);