Use lossy prefs in the net predictor, and update them more frequently

chrome/browser/net/predictor_unittest.cc

 // Copyright (c) 2012 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/net/predictor.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 135 matching lines @@
 
 TEST_F(PredictorTest, StartupShutdownTest) {
   Predictor testing_master(true, true);
   testing_master.Shutdown();
 }
 
 // Make sure nil referral lists really have no entries, and no latency listed.
 TEST_F(PredictorTest, ReferrerSerializationNilTest) {
   Predictor predictor(true, true);
 
-  std::unique_ptr<base::ListValue> referral_list(NewEmptySerializationList());
+  std::unique_ptr<base::ListValue> referral_list(new base::ListValue);
   predictor.SerializeReferrers(referral_list.get());
   EXPECT_EQ(1U, referral_list->GetSize());
   EXPECT_FALSE(GetDataFromSerialization(
     GURL("http://a.com:79"), GURL("http://b.com:78"),
       *referral_list.get(), NULL));
 
   predictor.Shutdown();
 }
 
 // Make sure that when a serialization list includes a value, that it can be
@@ skipping 211 matching lines @@
 TEST_F(PredictorTest, DiscardPredictorResults) {
   SimplePredictor predictor(true, true);
   base::ListValue referral_list;
   predictor.SerializeReferrers(&referral_list);
   EXPECT_EQ(1U, referral_list.GetSize());
 
   GURL host_1("http://test_1");
   GURL host_2("http://test_2");
   predictor.LearnFromNavigation(host_1, host_2);
 
+  referral_list.Clear();
   predictor.SerializeReferrers(&referral_list);
   EXPECT_EQ(2U, referral_list.GetSize());
 
   predictor.DiscardAllResults();
+  referral_list.Clear();
   predictor.SerializeReferrers(&referral_list);
   EXPECT_EQ(1U, referral_list.GetSize());
 
   predictor.Shutdown();
 }
 
 class TestPredictorObserver : public PredictorObserver {
  public:
   // PredictorObserver implementation:
   void OnPreconnectUrl(const GURL& url,
@@ skipping 155 matching lines @@
   testing_master.Resolve(goog, UrlInfo::OMNIBOX_MOTIVATED);
 
   // Proxy may not be in use (the PAC script has not yet been evaluated), so the
   // name has been registered for pre-resolve.
   EXPECT_FALSE(testing_master.work_queue_.IsEmpty());
 
   testing_master.Shutdown();
 }
 
 }  // namespace chrome_browser_net