Replace HistoryQuickProvider protobuf-based caching with an SQLite-based database.

chrome/common/chrome_notification_types.h

 // 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.
 
 #ifndef CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_
 
 #include "content/public/browser/notification_types.h"
 
 namespace chrome {
@@ skipping 300 matching lines @@
 
   // Sent before a Profile is destroyed. This notification is sent both for
   // normal and OTR profiles.
   // The details are none and the source is a Profile*.
   NOTIFICATION_PROFILE_DESTROYED,
 
   // Sent after the URLRequestContextGetter for a Profile has been initialized.
   // The details are none and the source is a Profile*.
   NOTIFICATION_PROFILE_URL_REQUEST_CONTEXT_GETTER_INITIALIZED,
 
+  // HistoryQuickProvider and InMemoryURLIndex -------------------------------
+
+  // Sent when an update operation to the InMemoryURLCacheDatabase fails
+  // indicating that the database is probably corrupt.  The source is the
+  // instance of the InMemoryURLCacheDatabase. Details is not used.
+  NOTIFICATION_IN_MEMORY_URL_CACHE_DATABASE_FAILURE,
+
   // TopSites ----------------------------------------------------------------
 
   // Sent by TopSites when it finishes loading. The source is the profile the
   // details the TopSites.
   NOTIFICATION_TOP_SITES_LOADED,
 
   // Sent by TopSites when it has finished updating its most visited URLs
   // cache after querying the history service. The source is the TopSites and
   // the details a CancelableRequestProvider::Handle from the history service
   // query.
@@ skipping 906 matching lines @@
   // Currently only Content and Chrome define and use notifications.
   // Custom notifications not belonging to Content and Chrome should start
   // from here.
   NOTIFICATION_CHROME_END,
 };
 
 }  // namespace chrome
 
 
 #endif  // CHROME_COMMON_CHROME_NOTIFICATION_TYPES_H_