New CPAT support in DataReductionProxyConfig guarded by feature flag.

components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.cc

 // Copyright 2015 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.
 
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h"
 
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 275 matching lines @@
 void DataReductionProxyIOData::SetDataReductionProxyConfiguration(
     const std::string& serialized_config) {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
   if (config_client_)
     config_client_->ApplySerializedConfig(serialized_config);
 }
 
 bool DataReductionProxyIOData::ShouldEnableLoFi(
     const net::URLRequest& request,
     previews::PreviewsDecider* previews_decider) {
+  DCHECK(previews_decider);
   DCHECK((request.load_flags() & net::LOAD_MAIN_FRAME_DEPRECATED) != 0);
   if (!config_ || (config_->IsBypassedByDataReductionProxyLocalRules(
                       request, configurator_->GetProxyConfig()))) {
     return false;
   }
-  return config_->ShouldEnableLoFi(request, previews_decider);
+  return config_->ShouldEnableLoFi(request, *previews_decider);
 }
 
 bool DataReductionProxyIOData::ShouldEnableLitePages(
     const net::URLRequest& request,
     previews::PreviewsDecider* previews_decider) {
+  DCHECK(previews_decider);
   DCHECK((request.load_flags() & net::LOAD_MAIN_FRAME_DEPRECATED) != 0);
   if (!config_ || (config_->IsBypassedByDataReductionProxyLocalRules(
                       request, configurator_->GetProxyConfig()))) {
     return false;
   }
-  return config_->ShouldEnableLitePages(request, previews_decider);
+  return config_->ShouldEnableLitePages(request, *previews_decider);
 }
 
 void DataReductionProxyIOData::SetLoFiModeOff() {
   config_->SetLoFiModeOff();
 }
 
 void DataReductionProxyIOData::UpdateDataUseForHost(int64_t network_bytes,
                                                     int64_t original_bytes,
                                                     const std::string& host) {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
@@ skipping 88 matching lines @@
                             pref_path, value));
 }
 
 void DataReductionProxyIOData::StoreSerializedConfig(
     const std::string& serialized_config) {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
   SetStringPref(prefs::kDataReductionProxyConfig, serialized_config);
 }
 
 }  // namespace data_reduction_proxy