predictors: Refactor resource_prefetch_predictor triggering.

chrome/browser/predictors/resource_prefetch_predictor_test_util.cc

 // Copyright 2016 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 "chrome/browser/predictors/resource_prefetch_predictor_test_util.h"
 
 #include <cmath>
 
 namespace {
 
@@ skipping 158 matching lines @@
   summary.was_cached = was_cached;
   if (!redirect_url.empty())
     summary.redirect_url = GURL(redirect_url);
   summary.has_validators = has_validators;
   summary.always_revalidate = always_revalidate;
   summary.is_no_store = false;
   summary.network_accessed = true;
   return summary;
 }
 
+void PopulateTestConfig(LoadingPredictorConfig* config, bool small_db) {
+  if (small_db) {
+    config->max_urls_to_track = 3;
+    config->max_hosts_to_track = 2;
+    config->min_url_visit_count = 2;
+    config->max_resources_per_entry = 4;
+    config->max_consecutive_misses = 2;
+    config->max_redirect_consecutive_misses = 2;
+    config->min_resource_confidence_to_trigger_prefetch = 0.5;
+  }
+  config->is_url_learning_enabled = true;
+  config->is_manifests_enabled = true;
+  config->is_origin_learning_enabled = true;
+  config->mode = LoadingPredictorConfig::LEARNING;
+}
+
 std::ostream& operator<<(std::ostream& os, const PrefetchData& data) {
   os << "[" << data.primary_key() << "," << data.last_visit_time() << "]"
      << std::endl;
   for (const ResourceData& resource : data.resources())
     os << "\t\t" << resource << std::endl;
   return os;
 }
 
 std::ostream& operator<<(std::ostream& os, const ResourceData& resource) {
   return os << "[" << resource.resource_url() << "," << resource.resource_type()
@@ skipping 172 matching lines @@
 
   return equal;
 }
 
 bool operator==(const PrecacheResource& lhs, const PrecacheResource& rhs) {
   return lhs.url() == rhs.url() &&
          AlmostEqual(lhs.weight_ratio(), rhs.weight_ratio());
 }
 
 }  // namespace precache