Part 5 of search provider refactoring.

chrome/browser/autocomplete/base_search_provider.h

 // Copyright 2014 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 class contains common functionality for search-based autocomplete
 // providers. Search provider and zero suggest provider both use it for common
 // functionality.
 
 #ifndef CHROME_BROWSER_AUTOCOMPLETE_BASE_SEARCH_PROVIDER_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_BASE_SEARCH_PROVIDER_H_
@@ skipping 25 matching lines @@
                            public net::URLFetcherDelegate {
  public:
   BaseSearchProvider(AutocompleteProviderListener* listener,
                      Profile* profile,
                      AutocompleteProvider::Type type);
 
   // Returns whether |match| is flagged as a query that should be prefetched.
   static bool ShouldPrefetch(const AutocompleteMatch& match);
 
   // AutocompleteProvider:
+  virtual void Stop(bool clear_cached_results) OVERRIDE;
   virtual void AddProviderInfo(ProvidersInfo* provider_info) const OVERRIDE;
 
   bool field_trial_triggered_in_session() const {
     return field_trial_triggered_in_session_;
   }
 
  protected:
   // The following keys are used to record additional information on matches.
 
   // We annotate our AutocompleteMatches with whether their relevance scores
@@ skipping 295 matching lines @@
 
   // Returns the AutocompleteInput based on whether the |result| is from the
   // default provider or from the keyword provider.
   virtual const AutocompleteInput GetInput(
       const SuggestResult& result) const = 0;
 
   // Returns whether the destination URL corresponding to the given |result|
   // should contain command-line-specified query params.
   virtual bool ShouldAppendExtraParams(const SuggestResult& result) const = 0;
 
+  // Stops the suggest query.
+  // NOTE: This does not update |done_|.  Callers must do so.
+  virtual void StopSuggest() = 0;
+
+  // Clears the current results.
+  virtual void ClearAllResults() = 0;
+
   // Whether a field trial, if any, has triggered in the most recent
   // autocomplete query. This field is set to true only if the suggestion
   // provider has completed and the response contained
   // '"google:fieldtrialtriggered":true'.
   bool field_trial_triggered_;
 
   // Same as above except that it is maintained across the current Omnibox
   // session.
   bool field_trial_triggered_in_session_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BaseSearchProvider);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_BASE_SEARCH_PROVIDER_H_