Prerender/Instant interopability.

chrome/browser/instant/instant_controller.cc

Index: chrome/browser/instant/instant_controller.cc
diff --git a/chrome/browser/instant/instant_controller.cc b/chrome/browser/instant/instant_controller.cc
index dc8ea6007619b1452364aab58ee3f0e05fff9c71..65ba84f4f33ea7ffb97eb38d291decb36f25be5f 100644
--- a/chrome/browser/instant/instant_controller.cc
+++ b/chrome/browser/instant/instant_controller.cc
@@ -500,6 +500,11 @@ void InstantController::AddToBlacklist(InstantLoader* loader, const GURL& url) {
   UpdateDisplayableLoader();
 }
 
+void InstantController::SwappedTabContents(InstantLoader* loader) {
+  if (displayable_loader_ == loader)
+    delegate_->ShowInstant(displayable_loader_->preview_contents());
+}
+
 void InstantController::UpdateDisplayableLoader() {
   InstantLoader* loader = NULL;
   // As soon as the pending loader is displayable it becomes the current loader,