Database usage adjustment for .../history

chrome/browser/history/visit_database.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_HISTORY_VISIT_DATABASE_H_
 #define CHROME_BROWSER_HISTORY_VISIT_DATABASE_H_
 #pragma once
 
 #include "chrome/browser/history/history_types.h"
 
@@ skipping 51 matching lines @@
 
   // Fills all visits in the time range [begin, end) to the given vector. Either
   // time can be is_null(), in which case the times in that direction are
   // unbounded.
   //
   // If |max_results| is non-zero, up to that many results will be returned. If
   // there are more results than that, the oldest ones will be returned. (This
   // is used for history expiration.)
   //
   // The results will be in increasing order of date.
-  void GetAllVisitsInRange(base::Time begin_time, base::Time end_time,
+  bool GetAllVisitsInRange(base::Time begin_time, base::Time end_time,
                            int max_results, VisitVector* visits);
 
   // Fills all visits with specified transition in the time range [begin, end)
   // to the given vector. Either time can be is_null(), in which case the times
   // in that direction are unbounded.
   //
   // If |max_results| is non-zero, up to that many results will be returned. If
   // there are more results than that, the oldest ones will be returned. (This
   // is used for history expiration.)
   //
   // The results will be in increasing order of date.
-  void GetVisitsInRangeForTransition(base::Time begin_time,
+  bool GetVisitsInRangeForTransition(base::Time begin_time,
                                      base::Time end_time,
                                      int max_results,
                                      content::PageTransition transition,
                                      VisitVector* visits);
 
   // Fills all visits in the given time range into the given vector that should
   // be user-visible, which excludes things like redirects and subframes. The
   // begin time is inclusive, the end time is exclusive. Either time can be
   // is_null(), in which case the times in that direction are unbounded.
   //
@@ skipping 68 matching lines @@
   // Called by the derived classes on initialization to make sure the tables
   // and indices are properly set up. Must be called before anything else.
   bool InitVisitTable();
 
   // Convenience to fill a VisitRow. Assumes the visit values are bound starting
   // at index 0.
   static void FillVisitRow(sql::Statement& statement, VisitRow* visit);
 
   // Convenience to fill a VisitVector. Assumes that statement.step()
   // hasn't happened yet.
-  static void FillVisitVector(sql::Statement& statement, VisitVector* visits);
+  static bool FillVisitVector(sql::Statement& statement, VisitVector* visits);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(VisitDatabase);
 };
 
 }  // history
 
 #endif  // CHROME_BROWSER_HISTORY_VISIT_DATABASE_H_