Part 1 of search provider refactoring.

chrome/browser/autocomplete/zero_suggest_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 zero-suggest autocomplete provider. This experimental
 // provider is invoked when the user focuses in the omnibox prior to editing,
 // and generates search query suggestions based on the current URL. To enable
 // this provider, point --experimental-zero-suggest-url-prefix at an
 // appropriate suggestion service.
 //
 // HUGE DISCLAIMER: This is just here for experimenting and will probably be
 // deleted entirely as we revise how suggestions work with the omnibox.
 
 #ifndef CHROME_BROWSER_AUTOCOMPLETE_ZERO_SUGGEST_PROVIDER_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_ZERO_SUGGEST_PROVIDER_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/strings/string16.h"
-#include "chrome/browser/autocomplete/autocomplete_provider.h"
+#include "chrome/browser/autocomplete/base_search_provider.h"
 #include "chrome/browser/autocomplete/search_provider.h"
-#include "net/url_request/url_fetcher_delegate.h"
 
-class AutocompleteInput;
-class GURL;
 class TemplateURLService;
 
 namespace base {
 class ListValue;
 class Value;
 }
 
 namespace net {
 class URLFetcher;
 }
 
 // Autocomplete provider for searches based on the current URL.
 //
 // The controller will call StartZeroSuggest when the user focuses in the
 // omnibox. After construction, the autocomplete controller repeatedly calls
 // Start() with some user input, each time expecting to receive an updated
 // set of matches.
 //
 // TODO(jered): Consider deleting this class and building this functionality
 // into SearchProvider after dogfood and after we break the association between
 // omnibox text and suggestions.
-class ZeroSuggestProvider : public AutocompleteProvider,
-                            public net::URLFetcherDelegate {
+class ZeroSuggestProvider : public BaseSearchProvider {
  public:
   // Creates and returns an instance of this provider.
   static ZeroSuggestProvider* Create(AutocompleteProviderListener* listener,
                                      Profile* profile);
 
   // AutocompleteProvider:
   virtual void Start(const AutocompleteInput& input,
                      bool /*minimal_changes*/) OVERRIDE;
   virtual void Stop(bool clear_cached_results) OVERRIDE;
 
@@ skipping 28 matching lines @@
   // arguments) were copied and trimmed from SearchProvider.
   // TODO(hfung): Refactor them into a new base class common to both
   // ZeroSuggestProvider and SearchProvider.
 
   // From the OpenSearch formatted response |root_val|, populate query
   // suggestions into |suggest_results|, navigation suggestions into
   // |navigation_results|, and the verbatim relevance score into
   // |verbatim_relevance|.
   void FillResults(const base::Value& root_val,
                    int* verbatim_relevance,
-                   SearchProvider::SuggestResults* suggest_results,
-                   SearchProvider::NavigationResults* navigation_results);
+                   SuggestResults* suggest_results,
+                   NavigationResults* navigation_results);
 
   // Creates AutocompleteMatches to search |template_url| for "<suggestion>" for
   // all suggestions in |results|, and adds them to |map|.
-  void AddSuggestResultsToMap(const SearchProvider::SuggestResults& results,
+  void AddSuggestResultsToMap(const SuggestResults& results,
                               const TemplateURL* template_url,
-                              SearchProvider::MatchMap* map);
+                              MatchMap* map);
 
   // Creates an AutocompleteMatch with the provided |relevance| and |type| to
   // search |template_url| for |query_string|.  |accepted_suggestion| will be
   // used to generate Assisted Query Stats.
   //
   // Adds this match to |map|; if such a match already exists, whichever one
   // has lower relevance is eliminated.
   void AddMatchToMap(int relevance,
                      AutocompleteMatch::Type type,
                      const TemplateURL* template_url,
                      const base::string16& query_string,
                      int accepted_suggestion,
-                     SearchProvider::MatchMap* map);
+                     MatchMap* map);
 
   // Returns an AutocompleteMatch for a navigational suggestion |navigation|.
-  AutocompleteMatch NavigationToMatch(
-      const SearchProvider::NavigationResult& navigation);
+  AutocompleteMatch NavigationToMatch(const NavigationResult& navigation);
 
   // Fetches zero-suggest suggestions by sending a request using |suggest_url|.
   void Run(const GURL& suggest_url);
 
   // Parses results from the zero-suggest server and updates results.
   void ParseSuggestResults(const base::Value& root_val);
 
   // Converts the parsed results to a set of AutocompleteMatches and adds them
   // to |matches_|.  Also update the histograms for how many results were
   // received.
@@ skipping 23 matching lines @@
   base::string16 permanent_text_;
 
   // Fetcher used to retrieve results.
   scoped_ptr<net::URLFetcher> fetcher_;
   // Whether there's a pending request in flight.
   bool have_pending_request_;
 
   // Suggestion for the current URL.
   AutocompleteMatch current_url_match_;
   // Navigation suggestions for the most recent ZeroSuggest input URL.
-  SearchProvider::NavigationResults navigation_results_;
+  NavigationResults navigation_results_;
   // Query suggestions for the most recent ZeroSuggest input URL.
-  SearchProvider::MatchMap query_matches_map_;
+  MatchMap query_matches_map_;
   // The relevance score for the URL of the current page.
   int verbatim_relevance_;
 
   // Whether a field trial, if any, has triggered in the most recent
   // autocomplete query. This field is set to true if the last request
   // was a zero suggest request, the provider has completed and their
   // corresponding response contained '"google:fieldtrialtriggered":true'.
   bool field_trial_triggered_;
   // Whether a zero suggest request triggered a field trial in the omnibox
   // session.  The user could have clicked on a suggestion when zero suggest
   // triggered (same condition as field_trial_triggered_), or triggered zero
   // suggest but kept typing.
   bool field_trial_triggered_in_session_;
 
   history::MostVisitedURLList most_visited_urls_;
 
   // For callbacks that may be run after destruction.
   base::WeakPtrFactory<ZeroSuggestProvider> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ZeroSuggestProvider);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_ZERO_SUGGEST_PROVIDER_H_