Pass rendering state on swapping in a prerendered page.

chrome/browser/ui/tab_contents/core_tab_helper_delegate.h

Index: chrome/browser/ui/tab_contents/core_tab_helper_delegate.h
diff --git a/chrome/browser/ui/tab_contents/core_tab_helper_delegate.h b/chrome/browser/ui/tab_contents/core_tab_helper_delegate.h
index e06abb29ab39dd6e1baec96ffddfdf6ca51526df..3f9907d5ccdc7ea2215348347b5685ec6c5d3ef2 100644
--- a/chrome/browser/ui/tab_contents/core_tab_helper_delegate.h
+++ b/chrome/browser/ui/tab_contents/core_tab_helper_delegate.h
@@ -20,8 +20,12 @@ class WebContents;
 class CoreTabHelperDelegate {
  public:
   // The caller is responsible for deleting |old_contents|.
+  // |did_finish_load| is true if WebContentsObserver::DidFinishLoad() has
+  // already been called for |new_contents|.
   virtual void SwapTabContents(content::WebContents* old_contents,
-                               content::WebContents* new_contents);
+                               content::WebContents* new_contents,
+                               bool did_start_load,
+                               bool did_finish_load);
 
   // Whether the specified WebContents can be reloaded.
   // Reloading can be disabled e.g. for the DevTools window.