Prerendered pages are swapped in at browser::Navigate time.

chrome/renderer/prerender/prerender_helper.cc

 // Copyright (c) 2011 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/renderer/prerender/prerender_helper.h"
 
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
-#include "chrome/common/render_messages.h"
+#include "chrome/common/prerender_messages.h"
 #include "content/public/renderer/document_state.h"
 #include "content/public/renderer/render_view.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 
 using content::DocumentState;
 
 // Helper macro for histograms.
 #define RECORD_PLT(tag, perceived_page_load_time) { \
     UMA_HISTOGRAM_CUSTOM_TIMES( \
@@ skipping 104 matching lines @@
     prerender_start_time_ = document_state->request_time();
     // The first navigation for prerendering RenderViews can only be triggered
     // from PrerenderContents, so there should be a request_time.
     DCHECK(!prerender_start_time_.is_null());
   }
 }
 
 bool PrerenderHelper::OnMessageReceived(
     const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(PrerenderHelper, message)
-    IPC_MESSAGE_HANDLER(ChromeViewMsg_SetIsPrerendering, OnSetIsPrerendering)
+    IPC_MESSAGE_HANDLER(PrerenderMsg_SetIsPrerendering, OnSetIsPrerendering)
   IPC_END_MESSAGE_MAP()
   // Return false on ViewMsg_SetIsPrerendering so other observers can see the
   // message.
   return false;
 }
 
 void PrerenderHelper::OnSetIsPrerendering(bool is_prerendering) {
   // Immediately after construction, |this| may receive the message that
   // triggered its creation.  If so, ignore it.
   if (is_prerendering)
@@ skipping 11 matching lines @@
 }
 
 void PrerenderHelper::UpdateVisibilityState() {
   if (render_view()->GetWebView()) {
     render_view()->GetWebView()->setVisibilityState(
         render_view()->GetVisibilityState(), false);
   }
 }
 
 }  // namespace prerender