Omnibox: Add Mid-Input Matching to HistoryQuick Provider

chrome/browser/autocomplete/history_quick_provider.cc

 // 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.
 
 #include "chrome/browser/autocomplete/history_quick_provider.h"
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
@@ skipping 145 matching lines @@
   DCHECK(match.destination_url.is_valid());
   // Delete the match from the InMemoryURLIndex.
   GetIndex()->DeleteURL(match.destination_url);
   DeleteMatchFromMatches(match);
 }
 
 HistoryQuickProvider::~HistoryQuickProvider() {}
 
 void HistoryQuickProvider::DoAutocomplete() {
   // Get the matching URLs from the DB.
-  string16 term_string = autocomplete_input_.text();
-  ScoredHistoryMatches matches = GetIndex()->HistoryItemsForTerms(term_string);
+  ScoredHistoryMatches matches = GetIndex()->HistoryItemsForTerms(
+      autocomplete_input_.text(),
+      autocomplete_input_.cursor_position());
   if (matches.empty())
     return;
 
   // If we're allowed to reorder results in order to get an inlineable
   // result to appear first (and hence have a HistoryQuickProvider
   // suggestion possibly appear first), find the first inlineable
   // result and then swap it to the front.  Obviously, don't do this
   // if we're told to prevent inline autocompletion.  (If we're told
   // we're going to prevent inline autocompletion, we're going to
   // later demote the score of all results so none will be inlined.
@@ skipping 218 matching lines @@
     do {
       offset += matches[i].length;
       ++i;
     } while ((i < match_count) && (offset == matches[i].offset));
     if (offset < text_length)
       spans.push_back(ACMatchClassification(offset, url_style));
   }
 
   return spans;
 }