Move SearchTermsData::ForceInstantResultsParam() to chrome::ForceInstantResultsParam().

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 68 matching lines @@
 uint64 EmbeddedSearchPageVersion();
 
 // Returns a string indicating whether InstantExtended is enabled, suitable
 // for adding as a query string param to the homepage or search requests.
 // Returns an empty string otherwise.
 //
 // |for_search| should be set to true for search requests, in which case this
 // returns a non-empty string only if query extraction is enabled.
 std::string InstantExtendedEnabledParam(bool for_search);
 
+// Returns a string that will cause the search results page to update
+// incrementally. Currently, Instant Extended passes a different param to
+// search results pages that also has this effect, so by default this function
+// returns the empty string when Instant Extended is enabled. However, when
+// doing instant search result prerendering, we still need to pass this param,
+// as Instant Extended does not cause incremental updates by default for the
+// prerender page. Callers should set |for_prerender| in this case to force
+// the returned string to be non-empty.
+std::string ForceInstantResultsParam(bool for_prerender);
+
 // Returns whether query extraction is enabled.
 bool IsQueryExtractionEnabled();
 
 // Extracts and returns search terms from |url|. Returns empty string if the URL
 // is not secure or doesn't have a search term replacement key.  Does not
 // consider IsQueryExtractionEnabled() and Instant support state of the page and
 // does not check for a privileged process, so most callers should use
 // GetSearchTerms() below instead.
 base::string16 GetSearchTermsFromURL(Profile* profile, const GURL& url);
 
@@ skipping 183 matching lines @@
 bool GetBoolValueForFlagWithDefault(const std::string& flag,
                                     bool default_value,
                                     const FieldTrialFlags& flags);
 
 // Returns the Cacheable New Tab Page URL for the given |profile|.
 GURL GetNewTabPageURL(Profile* profile);
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_SEARCH_SEARCH_H_