Implement visited link coloring.

webkit/glue/webkit_glue.h

 // 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.
 
 #ifndef WEBKIT_GLUE_WEBKIT_GLUE_H_
 #define WEBKIT_GLUE_WEBKIT_GLUE_H_
 
 #include "base/basictypes.h"
 
 #if defined(OS_WIN)
@@ skipping 255 matching lines @@
 void NotifyJSOutOfMemory(WebCore::Frame* frame);
 
 // Tells the plugin thread to terminate the process forcefully instead of
 // exiting cleanly.
 void SetForcefullyTerminatePluginProcess(bool value);
 
 // Returns true if the plugin thread should terminate the process forcefully
 // instead of exiting cleanly.
 bool ShouldForcefullyTerminatePluginProcess();
 
+// Returns the hash for the given canonicalized URL for use in visited link
+// coloring.
+uint64 VisitedLinkHash(const char* canonical_url, size_t length);
+
+bool IsLinkVisited(uint64 link_hash);
+
 } // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_WEBKIT_GLUE_H_