Replace string16 with base::string16.

chrome/browser/autocomplete/history_url_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.
 
 #ifndef CHROME_BROWSER_AUTOCOMPLETE_HISTORY_URL_PROVIDER_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_HISTORY_URL_PROVIDER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 155 matching lines @@
   virtual void Start(const AutocompleteInput& input,
                      bool minimal_changes) OVERRIDE;
   virtual void Stop(bool clear_cached_results) OVERRIDE;
 
   // Returns a match representing a navigation to |destination_url| given user
   // input of |text|.  |trim_http| controls whether the match's |fill_into_edit|
   // and |contents| should have any HTTP scheme stripped off, and should not be
   // set to true if |text| contains an http prefix.
   // NOTE: This does not set the relevance of the returned match, as different
   //       callers want different behavior. Callers must set this manually.
-  AutocompleteMatch SuggestExactInput(const string16& text,
+  AutocompleteMatch SuggestExactInput(const base::string16& text,
                                       const GURL& destination_url,
                                       bool trim_http);
 
   // Runs the history query on the history thread, called by the history
   // system. The history database MAY BE NULL in which case it is not
   // available and we should return no data. Also schedules returning the
   // results to the main thread
   void ExecuteWithDB(history::HistoryBackend* backend,
                      history::URLDatabase* db,
                      HistoryURLProviderParams* params);
@@ skipping 100 matching lines @@
   // Converts a line from the database into an autocomplete match for display.
   AutocompleteMatch HistoryMatchToACMatch(
       const HistoryURLProviderParams& params,
       const history::HistoryMatch& history_match,
       MatchType match_type,
       int relevance);
 
   // Returns a set of classifications that highlight all the occurrences
   // of |input_text| at word breaks in |description|.
   static ACMatchClassifications ClassifyDescription(
-      const string16& input_text,
-      const string16& description);
+      const base::string16& input_text,
+      const base::string16& description);
 
   // Params for the current query.  The provider should not free this directly;
   // instead, it is passed as a parameter through the history backend, and the
   // parameter itself is freed once it's no longer needed.  The only reason we
   // keep this member is so we can set the cancel bit on it.
   HistoryURLProviderParams* params_;
 
   // If true, HistoryURL provider should lookup and cull redirects.  If
   // false, it returns matches that may be redirects to each other and
   // simply hopes the default AutoCompleteController behavior to remove
@@ skipping 12 matching lines @@
   // URL-what-you-typed was visited before or not.  If false, the only
   // possible result that HistoryURL provider can return is
   // URL-what-you-typed.  This variable is not part of params_ because
   // it never changes after the HistoryURLProvider is initialized.
   // It's used to aid the transition to get all URLs from history to
   // be scored in the HistoryQuick provider only.
   bool search_url_database_;
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_HISTORY_URL_PROVIDER_H_