Issue 501916 : Add data type counts to profile deletion flow

components/history/core/browser/visit_database.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 "components/history/core/browser/visit_database.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <set>
@@ skipping 518 matching lines @@
   }
 
   if (!statement.Succeeded())
     return false;
 
   *first_visit = base::Time::FromInternalValue(statement.ColumnInt64(0));
   *count = statement.ColumnInt(1);
   return true;
 }
 
+int VisitDatabase::GetCountOfURLsWithVisibleVisit() {

[msramek, 2015/07/29 13:55:01]

In the Clear Browsing Data dialog, we decided to go with what the user sees in
chrome://history, which is "DISTINCT url FROM visits" per day. It would be
better to do the same here for consistency.

But I guess that this can be tweaked later, once the whole infrastructure is in
place.

[lwchkg, 2015/07/29 14:46:05]

I see. It means if "www.google.com" was visited in 3 different days, it should
be counted 3 times.

+  sql::Statement statement(GetDB().GetCachedStatement(SQL_FROM_HERE,
+      "SELECT COUNT(*) FROM ("
+      "SELECT DISTINCT url FROM visits "
+      "WHERE (transition & ?) != 0 "  // CHAIN_END
+      "AND (transition & ?) NOT IN (?, ?, ?)"  // NO SUBFRAME or
+                                               // KEYWORD_GENERATED
+      ")"));
+
+  statement.BindInt(0, ui::PAGE_TRANSITION_CHAIN_END);
+  statement.BindInt(1, ui::PAGE_TRANSITION_CORE_MASK);
+  statement.BindInt(2, ui::PAGE_TRANSITION_AUTO_SUBFRAME);
+  statement.BindInt(3, ui::PAGE_TRANSITION_MANUAL_SUBFRAME);
+  statement.BindInt(4, ui::PAGE_TRANSITION_KEYWORD_GENERATED);
+
+  statement.Step();
+  return statement.ColumnInt(0);
+}
+
 bool VisitDatabase::GetStartDate(base::Time* first_visit) {
   sql::Statement statement(GetDB().GetCachedStatement(SQL_FROM_HERE,
       "SELECT MIN(visit_time) FROM visits WHERE visit_time != 0"));
   if (!statement.Step() || statement.ColumnInt64(0) == 0) {
     *first_visit = base::Time::Now();
     return false;
   }
   *first_visit = base::Time::FromInternalValue(statement.ColumnInt64(0));
   return true;
 }
@@ skipping 44 matching lines @@
     // Old versions don't have the visit_duration column, we modify the table
     // to add that field.
     if (!GetDB().Execute("ALTER TABLE visits "
         "ADD COLUMN visit_duration INTEGER DEFAULT 0 NOT NULL"))
       return false;
   }
   return true;
 }
 
 }  // namespace history