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

chrome/renderer/blocked_plugin.cc

Index: chrome/renderer/blocked_plugin.cc
===================================================================
--- chrome/renderer/blocked_plugin.cc	(revision 71683)
+++ chrome/renderer/blocked_plugin.cc	(working copy)
@@ -49,11 +49,13 @@
                              const WebPluginParams& params,
                              const WebPreferences& preferences,
                              int template_id,
-                             const string16& message)
+                             const string16& message,
+                             bool is_blocked_for_prerendering)
     : RenderViewObserver(render_view),
       frame_(frame),
       plugin_params_(params),
-      custom_menu_showing_(false) {
+      custom_menu_showing_(false),
+      is_blocked_for_prerendering_(is_blocked_for_prerendering) {
   const base::StringPiece template_html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(template_id));
 
@@ -131,6 +133,9 @@
   // Don't want to swallow these messages.
   if (message.type() == ViewMsg_LoadBlockedPlugins::ID) {
     LoadPlugin();
+  } else if (message.type() == ViewMsg_DisplayPrerenderedPage::ID) {
+    if (is_blocked_for_prerendering_)
+      LoadPlugin();
   } else if (message.type() == ViewMsg_ContextMenuClosed::ID) {
     custom_menu_showing_ = false;
   }