Tighten conditions for when a URL is a search result, and move

chrome/browser/prerender/prerender_util.h

 // Copyright (c) 2011 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_PRERENDER_PRERENDER_UTIL_H_
 #define CHROME_BROWSER_PRERENDER_PRERENDER_UTIL_H_
 
 #include "base/basictypes.h"
 #include "googleurl/src/gurl.h"
 
 namespace prerender {
 
 // ID indicating that no experiment is active.
 const uint8 kNoExperiment = 0;
 
 // Extracts a urlencoded URL stored in a url= query parameter from a URL
 // supplied, if available, and stores it in alias_url.  Returns whether or not
 // the operation succeeded (i.e. a valid URL was found).
 bool MaybeGetQueryStringBasedAliasURL(const GURL& url, GURL* alias_url);
 
 // Extracts an experiment stored in the query parameter
 // lpe= from the URL supplied, and returns it.
 // Returns kNoExperiment if no experiment ID is found, or if the ID
 // is not an integer in the range 1 to 9.
 uint8 GetQueryStringBasedExperiment(const GURL& url);
 
+// Indicates whether the URL provided could be a Google search result page.
+bool IsGoogleSearchResultURL(const GURL& url);
+
 }  // namespace prerender
 
 #endif  // CHROME_BROWSER_PRERENDER_PRERENDER_UTIL_H_