Fix memory leak in AutocompleteProviderTest::GetDestinationURL unit test.

chrome/browser/autocomplete/autocomplete_controller.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_controller.h"
 
 #include <set>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 447 matching lines @@
   // Append the query formulation time (time from when the user first typed a
   // character into the omnibox to when the user selected a query) and whether
   // a field trial has triggered to the AQS parameter, if other AQS parameters
   // were already populated.
   if (template_url && match.search_terms_args.get() &&
       !match.search_terms_args->assisted_query_stats.empty()) {
     TemplateURLRef::SearchTermsArgs search_terms_args(*match.search_terms_args);
     search_terms_args.assisted_query_stats += base::StringPrintf(
         ".%" PRId64 "j%d",
         query_formulation_time.InMilliseconds(),
-        search_provider_->field_trial_triggered_in_session());
+        search_provider_ ?
+        search_provider_->field_trial_triggered_in_session() : false);
     destination_url = GURL(template_url->url_ref().
                            ReplaceSearchTerms(search_terms_args));
   }
   return destination_url;
 }
 
 void AutocompleteController::UpdateKeywordDescriptions(
     AutocompleteResult* result) {
   string16 last_keyword;
   for (AutocompleteResult::iterator i(result->begin()); i != result->end();
@@ skipping 43 matching lines @@
   }
   done_ = true;
 }
 
 void AutocompleteController::StartExpireTimer() {
   if (result_.HasCopiedMatches())
     expire_timer_.Start(FROM_HERE,
                         base::TimeDelta::FromMilliseconds(kExpireTimeMS),
                         this, &AutocompleteController::ExpireCopiedEntries);
 }