Prerender/Instant interopability.

chrome/browser/instant/instant_loader_delegate.h

Index: chrome/browser/instant/instant_loader_delegate.h
diff --git a/chrome/browser/instant/instant_loader_delegate.h b/chrome/browser/instant/instant_loader_delegate.h
index 8c4365710ec62ef59acf2481d6f6245c0266efa9..5b982577a1a0a418da02f04cb30894f473b6df94 100644
--- a/chrome/browser/instant/instant_loader_delegate.h
+++ b/chrome/browser/instant/instant_loader_delegate.h
@@ -45,6 +45,9 @@ class InstantLoaderDelegate {
   // Adds the specified url to the set of urls instant won't prefetch for.
   virtual void AddToBlacklist(InstantLoader* loader, const GURL& url) = 0;
 
+  // Invoked if the loader swaps to a different TabContents.
+  virtual void SwappedTabContents(InstantLoader* loader) = 0;
+
  protected:
   virtual ~InstantLoaderDelegate() {}
 };