Removes the link in the omnibox for searching history.

chrome/browser/autocomplete/autocomplete.h

 // Copyright (c) 2010 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_AUTOCOMPLETE_AUTOCOMPLETE_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 486 matching lines @@
   GURL alternate_nav_url() const { return alternate_nav_url_; }
 
   // Clears the matches for this result set.
   void Reset();
 
 #ifndef NDEBUG
   // Does a data integrity check on this result.
   void Validate() const;
 #endif
 
-  // Max number of matches we'll show from the various providers. We may end
-  // up showing an additional shortcut for Destinations->History, see
-  // AddHistoryContentsShortcut.
+  // Max number of matches we'll show from the various providers.
   static const size_t kMaxMatches;
 
  private:
   ACMatches matches_;
 
   const_iterator default_match_;
 
   // The "alternate navigation URL", if any, for this result set.  This is a URL
   // to try offering as a navigational option in case the user navigated to the
   // URL of the default match but intended something else.  For example, if the
@@ skipping 16 matching lines @@
   static const int kNoItemSelected;
 
   // Normally, you will call the first constructor.  Unit tests can use the
   // second to set the providers to some known testing providers.  The default
   // providers will be overridden and the controller will take ownership of the
   // providers, Release()ing them on destruction.
   explicit AutocompleteController(Profile* profile);
 #ifdef UNIT_TEST
   explicit AutocompleteController(const ACProviders& providers)
       : providers_(providers),
-        history_contents_provider_(NULL),
         search_provider_(NULL),
         updated_latest_result_(false),
         delay_interval_has_passed_(false),
         have_committed_during_this_query_(false),
         done_(true) {
   }
 #endif
   ~AutocompleteController();
 
   // Invoked when the profile changes. This forwards the call down to all
@@ skipping 78 matching lines @@
   void DelayTimerFired();
 
   // Copies |latest_result_| to |result_| and notifies observers of updates.
   // |notify_default_match| should normally be true; if it's false, we don't
   // send an AUTOCOMPLETE_CONTROLLER_DEFAULT_MATCH_UPDATED notification.  This
   // is a hack to avoid updating the edit with out-of-date data.
   // TODO(pkasting): Don't hardcode assumptions about who listens to these
   // notificiations.
   void CommitResult(bool notify_default_match);
 
-  // Returns the matches from |provider| whose destination urls are not in
-  // |latest_result_|.
-  ACMatches GetMatchesNotInLatestResult(
-      const AutocompleteProvider* provider) const;
-
-  // If the HistoryContentsAutocomplete provider is done and there are more
-  // matches in the database than currently shown, an entry is added to
-  // |latest_result_| to show all history matches.
-  void AddHistoryContentsShortcut();
-
   // Updates |done_| to be accurate with respect to current providers' statuses.
   void CheckIfDone();
 
   // A list of all providers.
   ACProviders providers_;
 
-  HistoryContentsProvider* history_contents_provider_;
-
   SearchProvider* search_provider_;
 
   // Input passed to Start.
   AutocompleteInput input_;
 
   // Data from the autocomplete query.
   AutocompleteResult result_;
 
   // The latest result available from the autocomplete providers.  This may be
   // different than |result_| if we've gotten matches from our providers that we
@@ skipping 58 matching lines @@
   AutocompleteInput::Type input_type;
   // Selected index (if selected) or -1 (AutocompletePopupModel::kNoMatch).
   size_t selected_index;
   // Inline autocompleted length (if displayed).
   size_t inline_autocompleted_length;
   // Result set.
   const AutocompleteResult& result;
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_H_