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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/history/history_backend.h" | 5 #include "chrome/browser/history/history_backend.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 #include <functional> | 8 #include <functional> |
9 #include <list> | 9 #include <list> |
10 #include <map> | 10 #include <map> |
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73 ExpireHistoryBackend (manages moving things from HistoryDatabase to | 73 ExpireHistoryBackend (manages moving things from HistoryDatabase to |
74 the ArchivedDatabase and deleting) | 74 the ArchivedDatabase and deleting) |
75 */ | 75 */ |
76 | 76 |
77 namespace history { | 77 namespace history { |
78 | 78 |
79 // How long we keep segment data for in days. Currently 3 months. | 79 // How long we keep segment data for in days. Currently 3 months. |
80 // This value needs to be greater or equal to | 80 // This value needs to be greater or equal to |
81 // MostVisitedModel::kMostVisitedScope but we don't want to introduce a direct | 81 // MostVisitedModel::kMostVisitedScope but we don't want to introduce a direct |
82 // dependency between MostVisitedModel and the history backend. | 82 // dependency between MostVisitedModel and the history backend. |
83 static const int kSegmentDataRetention = 90; | 83 const int kSegmentDataRetention = 90; |
84 | 84 |
85 // How long we'll wait to do a commit, so that things are batched together. | 85 // How long we'll wait to do a commit, so that things are batched together. |
86 static const int kCommitIntervalSeconds = 10; | 86 const int kCommitIntervalSeconds = 10; |
87 | 87 |
88 // The amount of time before we re-fetch the favicon. | 88 // The amount of time before we re-fetch the favicon. |
89 static const int kFaviconRefetchDays = 7; | 89 const int kFaviconRefetchDays = 7; |
90 | |
91 // GetSessionTabs returns all open tabs, or tabs closed kSessionCloseTimeWindow | |
92 // seconds ago. | |
93 static const int kSessionCloseTimeWindowSecs = 10; | |
94 | 90 |
95 // The maximum number of items we'll allow in the redirect list before | 91 // The maximum number of items we'll allow in the redirect list before |
96 // deleting some. | 92 // deleting some. |
97 static const int kMaxRedirectCount = 32; | 93 const int kMaxRedirectCount = 32; |
98 | 94 |
99 // The number of days old a history entry can be before it is considered "old" | 95 // The number of days old a history entry can be before it is considered "old" |
100 // and is archived. | 96 // and is archived. |
101 static const int kArchiveDaysThreshold = 90; | 97 const int kArchiveDaysThreshold = 90; |
102 | 98 |
103 #if defined(OS_ANDROID) | 99 #if defined(OS_ANDROID) |
104 // The maximum number of top sites to track when recording top page visit stats. | 100 // The maximum number of top sites to track when recording top page visit stats. |
105 static const size_t kPageVisitStatsMaxTopSites = 50; | 101 const size_t kPageVisitStatsMaxTopSites = 50; |
106 #endif | 102 #endif |
107 | 103 |
108 // Converts from PageUsageData to MostVisitedURL. |redirects| is a | 104 // Converts from PageUsageData to MostVisitedURL. |redirects| is a |
109 // list of redirects for this URL. Empty list means no redirects. | 105 // list of redirects for this URL. Empty list means no redirects. |
110 MostVisitedURL MakeMostVisitedURL(const PageUsageData& page_data, | 106 MostVisitedURL MakeMostVisitedURL(const PageUsageData& page_data, |
111 const RedirectList& redirects) { | 107 const RedirectList& redirects) { |
112 MostVisitedURL mv; | 108 MostVisitedURL mv; |
113 mv.url = page_data.GetURL(); | 109 mv.url = page_data.GetURL(); |
114 mv.title = page_data.GetTitle(); | 110 mv.title = page_data.GetTitle(); |
115 if (redirects.empty()) { | 111 if (redirects.empty()) { |
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2888 int rank = kPageVisitStatsMaxTopSites; | 2884 int rank = kPageVisitStatsMaxTopSites; |
2889 std::map<GURL, int>::const_iterator it = most_visited_urls_map_.find(url); | 2885 std::map<GURL, int>::const_iterator it = most_visited_urls_map_.find(url); |
2890 if (it != most_visited_urls_map_.end()) | 2886 if (it != most_visited_urls_map_.end()) |
2891 rank = (*it).second; | 2887 rank = (*it).second; |
2892 UMA_HISTOGRAM_ENUMERATION("History.TopSitesVisitsByRank", | 2888 UMA_HISTOGRAM_ENUMERATION("History.TopSitesVisitsByRank", |
2893 rank, kPageVisitStatsMaxTopSites + 1); | 2889 rank, kPageVisitStatsMaxTopSites + 1); |
2894 } | 2890 } |
2895 #endif | 2891 #endif |
2896 | 2892 |
2897 } // namespace history | 2893 } // namespace history |
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