Omnibox SearchProvider Experiment Client Implementation.

chrome/browser/autocomplete/autocomplete.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/autocomplete.h"
 
 #include <algorithm>
 #include <iterator>
 #include <set>
 
@@ skipping 989 matching lines @@
   // Sort the matches and trim to a small number of "best" matches.
   result_.SortAndCull(input_);
 
   // Need to validate before invoking CopyOldMatches as the old matches are not
   // valid against the current input.
 #ifndef NDEBUG
   result_.Validate();
 #endif
 
   if (!done_) {
-    // This conditional needs to match the conditional in Start that invokes
-    // StartExpireTimer.
+    // This must match the conditional in Start that invokes StartExpireTimer.
+    // TODO(msw): Remove or sanitize copied SEARCH_SUGGEST matches?
     result_.CopyOldMatches(input_, last_result);
   }
 
   UpdateKeywordDescriptions(&result_);
   UpdateAssociatedKeywords(&result_);
 
   bool notify_default_match = is_synchronous_pass;
   if (!is_synchronous_pass) {
     const bool last_default_was_valid =
         last_result.default_match() != last_result.end();
@@ skipping 116 matching lines @@
     const AutocompleteResult& result)
     : text(text),
       input_type(input_type),
       selected_index(selected_index),
       tab_id(tab_id),
       elapsed_time_since_user_first_modified_omnibox(
           elapsed_time_since_user_first_modified_omnibox),
       inline_autocompleted_length(inline_autocompleted_length),
       result(result) {
 }