1. Create and use the TopSites database file....

chrome/common/chrome_constants.cc

 // Copyright (c) 2006-2008 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/common/chrome_constants.h"
 
 #include "base/file_path.h"
 
 #define FPL FILE_PATH_LITERAL
 
@@ skipping 81 matching lines @@
 const FilePath::CharType kHistoryFilename[] = FPL("History");
 const FilePath::CharType kLocalStateFilename[] = FPL("Local State");
 const FilePath::CharType kPreferencesFilename[] = FPL("Preferences");
 const FilePath::CharType kSafeBrowsingFilename[] = FPL("Safe Browsing");
 // WARNING: SingletonSocket can't contain spaces, because otherwise
 // chrome_process_util_linux would be broken.
 const FilePath::CharType kSingletonSocketFilename[] = FPL("SingletonSocket");
 const FilePath::CharType kSingletonLockFilename[] = FPL("SingletonLock");
 const FilePath::CharType kThumbnailsFilename[] = FPL("Thumbnails");
 const FilePath::CharType kNewTabThumbnailsFilename[] = FPL("Top Thumbnails");
+const FilePath::CharType kTopSitesFilename[] = FPL("Top Sites");
 const wchar_t kUserDataDirname[] = L"User Data";
 const FilePath::CharType kUserScriptsDirname[] = FPL("User Scripts");
 const FilePath::CharType kWebDataFilename[] = FPL("Web Data");
 const FilePath::CharType kPrivacyBlacklistFileName[] = FPL("Privacy Blacklist");
 const FilePath::CharType kBookmarksFileName[] = FPL("Bookmarks");
 const FilePath::CharType kHistoryBookmarksFileName[] =
     FPL("Bookmarks From History");
 const FilePath::CharType kCustomDictionaryFileName[] =
     FPL("Custom Dictionary.txt");
 const FilePath::CharType kLoginDataFileName[] = FPL("Login Data");
@@ skipping 22 matching lines @@
 
 const int kHistogramSynchronizerReservedSequenceNumber = 0;
 
 const int kMaxSessionHistoryEntries = 50;
 
 const wchar_t kChromiumRendererIdProperty[] = L"ChromiumRendererId";
 
 }  // namespace chrome
 
 #undef FPL