Completely revert all my IPC work to see if this was what regressed the page cycler.

chrome/browser/visitedlink_event_listener.cc

 // Copyright (c) 2009 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/browser/visitedlink_event_listener.h"
 
 #include "base/shared_memory.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
+#include "chrome/common/render_messages.h"
 
 using base::Time;
 using base::TimeDelta;
 
 // The amount of time we wait to accumulate visited link additions.
 static const int kCommitIntervalMs = 100;
 
 void VisitedLinkEventListener::NewTable(base::SharedMemory* table_memory) {
   if (!table_memory)
     return;
@@ skipping 31 matching lines @@
 
 void VisitedLinkEventListener::CommitVisitedLinks() {
   // Send to all RenderProcessHosts.
   for (RenderProcessHost::iterator i(RenderProcessHost::AllHostsIterator());
        !i.IsAtEnd(); i.Advance()) {
     i.GetCurrentValue()->AddVisitedLinks(pending_visited_links_);
   }
 
   pending_visited_links_.clear();
 }