Don't load plugins on prerendered pages until the pages are displayed....

chrome/browser/prerender/prerender_contents.cc

 // Copyright (c) 2010 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/prerender/prerender_contents.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/background_contents_service.h"
 #include "chrome/browser/browsing_instance.h"
 #include "chrome/browser/prerender/prerender_manager.h"
@@ skipping 30 matching lines @@
   registrar_.Add(this, NotificationType::APP_TERMINATING,
                  NotificationService::AllSources());
 
   // Register for our parent profile to shutdown, so we can shut ourselves down
   // as well (should only be called for OTR profiles, as we should receive
   // APP_TERMINATING before non-OTR profiles are destroyed).
   // TODO(tburkard): figure out if this is needed.
   registrar_.Add(this, NotificationType::PROFILE_DESTROYED,
                  Source<Profile>(profile_));
   render_view_host_->CreateRenderView(string16());
-  render_view_host_->NavigateToURL(prerender_url_);
+
+  ViewMsg_Navigate_Params params;
+  params.url = prerender_url_;
+  params.transition = PageTransition::LINK;
+  params.navigation_type = ViewMsg_Navigate_Params::PRERENDER;
+  render_view_host_->Navigate(params);
 }
 
 PrerenderContents::~PrerenderContents() {
   if (!render_view_host_)   // Will be null for unit tests.
     return;
 
   render_view_host_->Shutdown();  // deletes render_view_host
 }
 
 RenderViewHostDelegate::View* PrerenderContents::GetViewDelegate() {
@@ skipping 146 matching lines @@
 }
 
 void PrerenderContents::ShowCreatedWidget(int route_id,
                                           const gfx::Rect& initial_pos) {
   NOTIMPLEMENTED();
 }
 
 void PrerenderContents::ShowCreatedFullscreenWidget(int route_id) {
   NOTIMPLEMENTED();
 }