Ensure zero suggest can handle XSSI-escaped output.

chrome/browser/autocomplete/search_provider.h

 // Copyright (c) 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.
 //
 // This file contains the Search autocomplete provider.  This provider is
 // responsible for all autocomplete entries that start with "Search <engine>
 // for ...", including searching for the current input string, search
 // history, and search suggestions.  An instance of it gets created and
 // managed by the autocomplete controller.
 
@@ skipping 392 matching lines @@
   void ApplyCalculatedRelevance();
   void ApplyCalculatedSuggestRelevance(SuggestResults* list);
   void ApplyCalculatedNavigationRelevance(NavigationResults* list);
 
   // Starts a new URLFetcher requesting suggest results from |template_url|;
   // callers own the returned URLFetcher, which is NULL for invalid providers.
   net::URLFetcher* CreateSuggestFetcher(int id,
                                         const TemplateURL* template_url,
                                         const AutocompleteInput& input);
 
+  // Parses JSON response received from the provider, stripping XSSI
+  // protection if needed. Returns the parsed data if successful, NULL
+  // otherwise.
+  static scoped_ptr<base::Value> DeserializeJsonData(std::string json_data);
+
   // Parses results from the suggest server and updates the appropriate suggest
   // and navigation result lists, depending on whether |is_keyword| is true.
   // Returns whether the appropriate result list members were updated.
   bool ParseSuggestResults(base::Value* root_val, bool is_keyword);
 
   // Converts the parsed results to a set of AutocompleteMatches, |matches_|.
   void ConvertResultsToAutocompleteMatches();
 
   // Returns an iterator to the first match in |matches_| which might
   // be chosen as default.  If
@@ skipping 210 matching lines @@
   // If true, search history query suggestions will score low enough that
   // they will not be inlined.
   bool prevent_search_history_inlining_;
 
   GURL current_page_url_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchProvider);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_SEARCH_PROVIDER_H_