predictors: Add origin learning.

chrome/browser/predictors/resource_prefetch_common.cc

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 ab9ec5da9d49cb0cf3ba0f0c19978d85c9e6fc4f..1c45d1ce095f5788c850e145c9a8cccf82e2ed1e 100644
--- a/chrome/browser/predictors/resource_prefetch_common.cc
+++ b/chrome/browser/predictors/resource_prefetch_common.cc
@@ -137,13 +137,15 @@ ResourcePrefetchPredictorConfig::ResourcePrefetchPredictorConfig()
       max_hosts_to_track(200),
       min_url_visit_count(2),
       max_resources_per_entry(50),
+      max_origins_per_entry(50),
       max_consecutive_misses(3),
       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),
       is_url_learning_enabled(false),
-      is_manifests_enabled(false) {}
+      is_manifests_enabled(false),
+      is_origin_prediction_enabled(false) {}
 
 ResourcePrefetchPredictorConfig::ResourcePrefetchPredictorConfig(
     const ResourcePrefetchPredictorConfig& other) = default;