Add finch flag for rendering a recently closed link on the local ntp.

chrome/browser/search/search.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SEARCH_SEARCH_H_
 #define CHROME_BROWSER_SEARCH_SEARCH_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 102 matching lines @@
 // so this simply returns whether GetInstantURL() is a valid URL.
 // NOTE: This method expands the default search engine's instant_url template,
 // so it shouldn't be called from SearchTermsData or other such code that would
 // lead to an infinite recursion.
 bool IsInstantEnabled(Profile* profile);
 
 // Returns true if the aggressive local NTP fallback is enabled in field
 // trials.
 bool IsAggressiveLocalNTPFallbackEnabled();
 
+// Returns true if the recently closed link on the local NTP is enabled in field
+// trials.
+bool IsRecentlyClosedNTPLinkEnabled();

[samarth, 2013/05/03 04:52:45]

How about ShouldShowRecentlyClosedOnNTP?

[jeremycho, 2013/05/03 06:30:29]

Done.

+
 // Returns true if |my_url| matches |other_url|.
 bool MatchesOriginAndPath(const GURL& my_url, const GURL& other_url);
 
 // -----------------------------------------------------
 // The following APIs are exposed for use in tests only.
 // -----------------------------------------------------
 
 // Forces the Instant Extended API to be enabled for tests.
 void EnableInstantExtendedAPIForTesting();
 
@@ skipping 37 matching lines @@
                                        const TemplateURLRef& ref,
                                        int start_margin);
 
 // Returns whether the default search provider has a valid Instant URL in its
 // template. Exposed for testing only.
 bool DefaultSearchProviderSupportsInstant(Profile* profile);
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_SEARCH_SEARCH_H_