tmp

chrome/browser/history/url_database.h

Index: chrome/browser/history/url_database.h
diff --git a/chrome/browser/history/url_database.h b/chrome/browser/history/url_database.h
index c486560f8e45bee0044b51a855bb6210543e0b9e..eca744cb7fabd103af7dd87099fc84f5844d6d78 100644
--- a/chrome/browser/history/url_database.h
+++ b/chrome/browser/history/url_database.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_HISTORY_URL_DATABASE_H_
 
 #include "base/basictypes.h"
+#include "base/observer_list.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/history/query_parser.h"
 #include "chrome/browser/search_engines/template_url_id.h"
@@ -20,6 +21,7 @@ class Connection;
 namespace history {
 
 class VisitDatabase;  // For friend statement.
+class URLDatabaseObserver;
 
 // Encapsulates an SQL database that holds URL info.  This is a subset of the
 // full history data.  We split this class' functionality out from the larger
@@ -239,6 +241,9 @@ class URLDatabase {
   bool InitIconMappingEnumeratorForEverything(
       IconMappingEnumerator* enumerator);
 
+  void AddObserver(URLDatabaseObserver* observer);
+  void RemoveObserver(URLDatabaseObserver* observer);
+
  protected:
   friend class VisitDatabase;
 
@@ -296,6 +301,8 @@ class URLDatabase {
   // have keyword search terms.
   bool has_keyword_search_terms_;
 
+  ObserverList<URLDatabaseObserver> observers_;
+
   QueryParser query_parser_;
 
   DISALLOW_COPY_AND_ASSIGN(URLDatabase);