Revert 244407 "InstantExtended: remove dead code related to the ..."

trunk/src/chrome/browser/search/search.h

Index: trunk/src/chrome/browser/search/search.h
===================================================================
--- trunk/src/chrome/browser/search/search.h	(revision 244428)
+++ trunk/src/chrome/browser/search/search.h	(working copy)
@@ -154,6 +154,13 @@
 // match.  See comments on ShouldHideTopMatch in autocomplete_result.h.
 bool ShouldHideTopVerbatimMatch();
 
+// Returns true if the cacheable NTP should be shown and false if not.
+// Exposed for testing.
+bool ShouldUseCacheableNTP();
+
+// Returns true if the Instant NTP should be shown and false if not.
+bool ShouldShowInstantNTP();
+
 // Returns when we should show a search button in the omnibox.  This may be any
 // of several values, some of which depend on whether the underlying state of
 // the page would normally be to perform search term replacement; see also
@@ -187,6 +194,13 @@
 // and hence different processes.
 GURL GetEffectiveURLForInstant(const GURL& url, Profile* profile);
 
+// Returns the staleness timeout (in seconds) that should be used to refresh the
+// InstantLoader.
+int GetInstantLoaderStalenessTimeoutSec();
+
+// Returns true if |contents| corresponds to a preloaded instant extended NTP.
+bool IsPreloadedInstantExtendedNTP(const content::WebContents* contents);
+
 // Rewrites |url| if
 //   1. |url| is kChromeUINewTabURL,
 //   2. InstantExtended is enabled, and