Add Precache.CacheStatus.Prefetch UMA.

components/precache/content/precache_manager_unittest.cc

 // Copyright 2013 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/precache/content/precache_manager.h"
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
@@ skipping 477 matching lines @@
   EXPECT_TRUE(precache_manager_->IsPrecaching());
   RecordStatsForPrecacheFetch(GURL("http://url.com"), std::string(),
                               base::TimeDelta(), base::Time(), info_, 1000);
   base::RunLoop().RunUntilIdle();
   precache_manager_->CancelPrecaching();
 
   // For PrecacheFetcher and RecordURLPrecached.
   base::RunLoop().RunUntilIdle();
   EXPECT_THAT(
       histograms_.GetTotalCountsForPrefix("Precache."),
-      UnorderedElementsAre(Pair("Precache.CacheSize.AllEntries", 1),
+      UnorderedElementsAre(Pair("Precache.CacheStatus.Prefetch", 1),
+                           Pair("Precache.CacheSize.AllEntries", 1),
                            Pair("Precache.DownloadedPrecacheMotivated", 1),
                            Pair("Precache.Fetch.PercentCompleted", 1),
                            Pair("Precache.Fetch.ResponseBytes.Network", 1),
                            Pair("Precache.Fetch.ResponseBytes.Total", 1),
                            Pair("Precache.Fetch.TimeToComplete", 1),
                            Pair("Precache.Latency.Prefetch", 1),
                            Pair("Precache.Freshness.Prefetch", 1)));
 }
 
 TEST_F(PrecacheManagerTest, RecordStatsForFetchHTTP) {
@@ skipping 60 matching lines @@
   // Precache a bunch of URLs, with different fetch times.
   RecordStatsForPrecacheFetch(
       GURL("http://old-fetch.com"), std::string(), base::TimeDelta(),
       kCurrentTime - base::TimeDelta::FromDays(61), info_, 1000);
   RecordStatsForPrecacheFetch(
       GURL("http://recent-fetch.com"), std::string(), base::TimeDelta(),
       kCurrentTime - base::TimeDelta::FromDays(59), info_, 1000);
   RecordStatsForPrecacheFetch(
       GURL("http://yesterday-fetch.com"), std::string(), base::TimeDelta(),
       kCurrentTime - base::TimeDelta::FromDays(1), info_, 1000);
+  expected_histogram_count_map["Precache.CacheStatus.Prefetch"] += 3;
   expected_histogram_count_map["Precache.CacheSize.AllEntries"]++;
   expected_histogram_count_map["Precache.DownloadedPrecacheMotivated"] += 3;
   expected_histogram_count_map["Precache.Fetch.PercentCompleted"]++;
   expected_histogram_count_map["Precache.Fetch.ResponseBytes.Network"]++;
   expected_histogram_count_map["Precache.Fetch.ResponseBytes.Total"]++;
   expected_histogram_count_map["Precache.Fetch.TimeToComplete"]++;
   expected_histogram_count_map["Precache.Latency.Prefetch"] += 3;
   expected_histogram_count_map["Precache.Freshness.Prefetch"] += 3;
   base::RunLoop().RunUntilIdle();
 
@@ skipping 58 matching lines @@
   expected_histogram_count_map["Precache.Saved"] += 2;
   expected_histogram_count_map["Precache.TimeSinceLastPrecache"] += 2;
   expected_histogram_count_map["Precache.Saved.Freshness"] = 2;
 
   base::RunLoop().RunUntilIdle();
   EXPECT_THAT(histograms_.GetTotalCountsForPrefix("Precache."),
               ContainerEq(expected_histogram_count_map));
 }
 
 }  // namespace precache