Index: chrome/browser/predictors/resource_prefetch_common.cc |
diff --git a/chrome/browser/predictors/resource_prefetch_common.cc b/chrome/browser/predictors/resource_prefetch_common.cc |
index 27ea7933c98834c5ddcc57903fc9775dce60cd82..6af90601f4d4e107b4ae8d09d49f93a49cb93b3a 100644 |
--- a/chrome/browser/predictors/resource_prefetch_common.cc |
+++ b/chrome/browser/predictors/resource_prefetch_common.cc |
@@ -7,14 +7,12 @@ |
#include <string> |
#include <tuple> |
-#include "base/command_line.h" |
-#include "base/metrics/field_trial.h" |
+#include "base/feature_list.h" |
+#include "base/metrics/field_trial_params.h" |
#include "chrome/browser/net/prediction_options.h" |
#include "chrome/browser/profiles/profile.h" |
#include "chrome/browser/sessions/session_tab_helper.h" |
-#include "chrome/common/chrome_switches.h" |
#include "components/prefs/pref_service.h" |
-#include "components/variations/variations_associated_data.h" |
#include "content/public/browser/browser_thread.h" |
#include "content/public/browser/web_contents.h" |
@@ -26,6 +24,7 @@ const char kModeParamName[] = "mode"; |
const char kLearningMode[] = "learning"; |
const char kExternalPrefetchingMode[] = "external-prefetching"; |
const char kPrefetchingMode[] = "prefetching"; |
+const char kEnableUrlLearningParamName[] = "enable-url-learning"; |
namespace { |
@@ -61,7 +60,14 @@ bool IsSpeculativeResourcePrefetchingEnabled( |
if (!base::FeatureList::IsEnabled(kSpeculativeResourcePrefetchingFeature)) |
return false; |
- std::string mode_value = variations::GetVariationParamValueByFeature( |
+ std::string enable_url_learning_value = |
+ base::GetFieldTrialParamValueByFeature( |
+ kSpeculativeResourcePrefetchingFeature, kEnableUrlLearningParamName); |
+ if (enable_url_learning_value == "true") { |
+ config->is_url_learning_enabled = true; |
+ } |
+ |
+ std::string mode_value = base::GetFieldTrialParamValueByFeature( |
kSpeculativeResourcePrefetchingFeature, kModeParamName); |
if (mode_value == kLearningMode) { |
config->mode |= ResourcePrefetchPredictorConfig::LEARNING; |
@@ -125,7 +131,8 @@ ResourcePrefetchPredictorConfig::ResourcePrefetchPredictorConfig() |
min_resource_confidence_to_trigger_prefetch(0.7f), |
min_resource_hits_to_trigger_prefetch(2), |
max_prefetches_inflight_per_navigation(5), |
- max_prefetches_inflight_per_host_per_navigation(3) { |
+ max_prefetches_inflight_per_host_per_navigation(3), |
+ is_url_learning_enabled(false) { |
} |
ResourcePrefetchPredictorConfig::ResourcePrefetchPredictorConfig( |