Omnibox Test: Fix noisy mock in OmniboxEditTests

components/omnibox/browser/omnibox_edit_unittest.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 <stddef.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 167 matching lines @@
               AutocompleteClassifier::DefaultOmniboxProviders()),
           base::MakeUnique<TestingSchemeClassifier>()) {}
 
 TestingOmniboxClient::~TestingOmniboxClient() {
   autocomplete_classifier_.Shutdown();
 }
 
 std::unique_ptr<AutocompleteProviderClient>
 TestingOmniboxClient::CreateAutocompleteProviderClient() {
   std::unique_ptr<MockAutocompleteProviderClient> provider_client(
-      new MockAutocompleteProviderClient());
+      new testing::NiceMock<MockAutocompleteProviderClient>());
   EXPECT_CALL(*provider_client.get(), GetBuiltinURLs())
       .WillRepeatedly(testing::Return(std::vector<base::string16>()));
   EXPECT_CALL(*provider_client.get(), GetSchemeClassifier())
       .WillRepeatedly(testing::ReturnRef(scheme_classifier_));
 
   std::unique_ptr<TemplateURLService> template_url_service(
       new TemplateURLService(
           nullptr, std::unique_ptr<SearchTermsData>(new SearchTermsData),
           nullptr, std::unique_ptr<TemplateURLServiceClient>(), nullptr,
           nullptr, base::Closure()));
@@ skipping 143 matching lines @@
                      alternate_nav_url, base::string16(), 0);
   EXPECT_TRUE(AutocompleteInput::HasHTTPScheme(
       client->alternate_nav_match().fill_into_edit));
 
   model()->SetUserText(base::ASCIIToUTF16("abcd"));
   model()->OpenMatch(match, WindowOpenDisposition::CURRENT_TAB,
                      alternate_nav_url, base::string16(), 0);
   EXPECT_TRUE(AutocompleteInput::HasHTTPScheme(
       client->alternate_nav_match().fill_into_edit));
 }