Add confidence to AutocompleteMatch.

chrome/browser/autocomplete/search_provider.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/autocomplete/search_provider.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/callback.h"
@@ skipping 798 matching lines @@
 }
 
 void SearchProvider::AddMatchToMap(const string16& query_string,
                                    const string16& input_text,
                                    int relevance,
                                    AutocompleteMatch::Type type,
                                    int accepted_suggestion,
                                    bool is_keyword,
                                    bool prevent_inline_autocomplete,
                                    MatchMap* map) {
-  AutocompleteMatch match(this, relevance, false, type);
+  // TODO(dominich): Confidence. In this case, the confidence must depend on the
+  // source. Scored terms can be calculated based on score, but other sources
+  // need more care. Eg, suggest.
+  AutocompleteMatch match(this, relevance, 0.0f, false, type);
   std::vector<size_t> content_param_offsets;
   const TemplateURL& provider = is_keyword ? providers_.keyword_provider() :
                                              providers_.default_provider();
   match.template_url = &provider;
   match.contents.assign(query_string);
   // We do intra-string highlighting for suggestions - the suggested segment
   // will be highlighted, e.g. for input_text = "you" the suggestion may be
   // "youtube", so we'll bold the "tube" section: you*tube*.
   if (input_text != query_string) {
     size_t input_position = match.contents.find(input_text);
@@ skipping 80 matching lines @@
   if (!i.second && (match.relevance > i.first->second.relevance))
     i.first->second = match;
 }
 
 AutocompleteMatch SearchProvider::NavigationToMatch(
     const NavigationResult& navigation,
     int relevance,
     bool is_keyword) {
   const string16& input_text =
       is_keyword ? keyword_input_text_ : input_.text();
-  AutocompleteMatch match(this, relevance, false,
+  // TODO(dominich): Confidence calculation.
+  AutocompleteMatch match(this, relevance, 0.0f, false,
                           AutocompleteMatch::NAVSUGGEST);
   match.destination_url = navigation.url;
   match.contents =
       StringForURLDisplay(navigation.url, true, !HasHTTPScheme(input_text));
   AutocompleteMatch::ClassifyMatchInString(input_text, match.contents,
                                            ACMatchClassification::URL,
                                            &match.contents_class);
 
   match.description = navigation.site_name;
   AutocompleteMatch::ClassifyMatchInString(input_text, navigation.site_name,
@@ skipping 13 matching lines @@
 
   return match;
 }
 
 void SearchProvider::UpdateDone() {
   // We're done when there are no more suggest queries pending (this is set to 1
   // when the timer is started) and we're not waiting on instant.
   done_ = ((suggest_results_pending_ == 0) &&
            (instant_finalized_ || !InstantController::IsEnabled(profile_)));
 }