Remove EmptyRuleIterators with nullptrs.

chrome/browser/content_settings/content_settings_pref_provider_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 "components/content_settings/core/browser/content_settings_pref_provider.h"
 
 #include <memory>
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
@@ skipping 401 matching lines @@
         CONTENT_SETTINGS_TYPE_COOKIES, std::string(), false));
     EXPECT_TRUE(it->HasNext());
     EXPECT_EQ(pattern_1, it->Next().primary_pattern);
     EXPECT_FALSE(it->HasNext());
   }
 
   // Non-OTR provider, OTR iterator has no settings.
   {
     std::unique_ptr<RuleIterator> it(normal_provider.GetRuleIterator(
         CONTENT_SETTINGS_TYPE_COOKIES, std::string(), true));
-    EXPECT_FALSE(it->HasNext());
+    EXPECT_FALSE(it);
   }
 
   // Create an incognito provider and set a setting.
   PrefProvider incognito_provider(&prefs, true);
   incognito_provider.SetWebsiteSetting(pattern_2, wildcard,
                                        CONTENT_SETTINGS_TYPE_COOKIES,
                                        std::string(), value->DeepCopy());
 
   // OTR provider, non-OTR iterator has one setting (pattern 1).
   {
@@ skipping 89 matching lines @@
   for (const char* pref : nonempty_prefs) {
     DictionaryPrefUpdate update(&prefs, pref);
     const base::DictionaryValue* dictionary = update.Get();
     EXPECT_EQ(1u, dictionary->size());
   }
 
   provider.ShutdownOnUIThread();
 }
 
 }  // namespace content_settings