InstantExtended: don't reset InstantTab if not ready.

chrome/browser/ui/search/instant_page.h

Index: chrome/browser/ui/search/instant_page.h
diff --git a/chrome/browser/ui/search/instant_page.h b/chrome/browser/ui/search/instant_page.h
index 6bae2655ca53bbfffd6a6a4075cb571f7e0d283c..de77be2df472b5f80da951cd5d467df221a18fe1 100644
--- a/chrome/browser/ui/search/instant_page.h
+++ b/chrome/browser/ui/search/instant_page.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
+#include "base/gtest_prod_util.h"
 #include "base/string16.h"
 #include "chrome/common/instant_types.h"
 #include "chrome/common/omnibox_focus_state.h"
@@ -199,6 +200,8 @@ class InstantPage : public content::WebContentsObserver {
   virtual bool ShouldProcessNavigateToURL();
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, UsesOverlayIfTabNotReady);
+
   // Overridden from content::WebContentsObserver:
   virtual void RenderViewCreated(
       content::RenderViewHost* render_view_host) OVERRIDE;