Create a new helper function to extract search terms from the URL irrespective of the availablility

chrome/browser/ui/search/instant_search_prerenderer.h

 // Copyright 2013 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_UI_SEARCH_INSTANT_SEARCH_PRERENDERER_H_
 #define CHROME_BROWSER_UI_SEARCH_INSTANT_SEARCH_PRERENDERER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
@@ skipping 64 matching lines @@
   // Returns the last prefetched search query.
   const base::string16& get_last_query() const {
     return last_instant_suggestion_.text;
   }
 
   // Returns true when prerendering is allowed for the given |source| and
   // |match|.
   bool IsAllowed(const AutocompleteMatch& match,
                  content::WebContents* source) const;
 
+  // Extracts and returns search terms from |url|. Does not consider
+  // IsQueryExtractionEnabled() and Instant support state of the page and does
+  // not check for a privileged process.
+  base::string16 GetSearchTermsFromURL(const GURL& url) const;

[Jered, 2014/02/07 03:02:26]

This code would be more appropriate in search.cc.

[kmadhusu, 2014/02/11 01:40:02]

Done.

+
  private:
   friend class InstantSearchPrerendererTest;
 
   content::WebContents* prerender_contents() const;
 
   // Returns true if the |query| matches the last prefetched search query or if
   // the 'reuse_instant_search_base_page' flag is enabled in the field trials.
   bool QueryMatchesPrefetch(const base::string16& query) const;
 
   Profile* const profile_;
 
   // Instant search base page URL.
   const GURL prerender_url_;
 
   scoped_ptr<prerender::PrerenderHandle> prerender_handle_;
 
   InstantSuggestion last_instant_suggestion_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantSearchPrerenderer);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_INSTANT_SEARCH_PRERENDERER_H_