InstantExtended: remove dead code related to the non-cacheable NTP.

chrome/browser/ui/search/instant_test_utils.h

Index: chrome/browser/ui/search/instant_test_utils.h
diff --git a/chrome/browser/ui/search/instant_test_utils.h b/chrome/browser/ui/search/instant_test_utils.h
index 1e3c7b51fb0d264611f752b8172fd095be43623e..229041ce432299f3517821a9c1a9b0c50bfe18e5 100644
--- a/chrome/browser/ui/search/instant_test_utils.h
+++ b/chrome/browser/ui/search/instant_test_utils.h
@@ -66,7 +66,6 @@ class InstantTestBase {
   void KillInstantRenderView();
 
   void FocusOmnibox();
-  void FocusOmniboxAndWaitForInstantNTPSupport();
 
   void SetOmniboxText(const std::string& text);
 
@@ -81,7 +80,6 @@ class InstantTestBase {
   bool GetStringFromJS(content::WebContents* contents,
                        const std::string& script,
                        std::string* result) WARN_UNUSED_RESULT;
-  bool ExecuteScript(const std::string& script) WARN_UNUSED_RESULT;
   bool CheckVisibilityIs(content::WebContents* contents,
                          bool expected) WARN_UNUSED_RESULT;