[AiS] Enable AiS flag on all platforms

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 56 matching lines @@
 // Use this value for "start margin" to prevent the "es_sm" parameter from
 // being used.
 extern const int kDisableStartMargin;
 
 // Returns whether the Instant Extended API is enabled.
 bool IsInstantExtendedAPIEnabled();
 
 // Returns whether the suggest is enabled for the given |profile|.
 bool IsSuggestPrefEnabled(Profile* profile);
 
+// Returns whether Answers in Suggest is enabled.
+bool IsAnswersInSuggestEnabled();
+
 // Returns the value to pass to the &espv CGI parameter when loading the
 // embedded search page from the user's default search provider. Returns 0 if
 // the Instant Extended API is not enabled.
 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
@@ skipping 210 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_