CookieStore: Remove reference counting.

net/cookies/cookie_monster_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 "net/cookies/cookie_store_unittest.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 53 matching lines @@
   virtual ~NewMockPersistentCookieStore() {}
 };
 
 const char kTopLevelDomainPlus1[] = "http://www.harvard.edu";
 const char kTopLevelDomainPlus2[] = "http://www.math.harvard.edu";
 const char kTopLevelDomainPlus2Secure[] = "https://www.math.harvard.edu";
 const char kTopLevelDomainPlus3[] = "http://www.bourbaki.math.harvard.edu";
 const char kOtherDomain[] = "http://www.mit.edu";
 
 struct CookieMonsterTestTraits {
-  static scoped_refptr<CookieStore> Create() {
-    return new CookieMonster(NULL, NULL);
+  static scoped_ptr<CookieStore> Create() {
+    return make_scoped_ptr(new CookieMonster(nullptr, nullptr));
   }
 
   static const bool supports_http_only = true;
   static const bool supports_non_dotted_domains = true;
   static const bool preserves_trailing_dots = true;
   static const bool filters_schemes = true;
   static const bool has_path_prefix_bug = false;
   static const int creation_time_granularity_in_ms = 0;
   static const bool enforce_strict_secure = false;
 };
 
 struct CookieMonsterEnforcingStrictSecure {
-  static scoped_refptr<CookieStore> Create() {
-    return new CookieMonster(NULL, NULL);
+  static scoped_ptr<CookieStore> Create() {
+    return make_scoped_ptr(new CookieMonster(nullptr, nullptr));
   }
 
   static const bool supports_http_only = true;
   static const bool supports_non_dotted_domains = true;
   static const bool preserves_trailing_dots = true;
   static const bool filters_schemes = true;
   static const bool has_path_prefix_bug = false;
   static const int creation_time_granularity_in_ms = 0;
   static const bool enforce_strict_secure = true;
 };
@@ skipping 59 matching lines @@
     cm->DeleteAllCreatedBetweenForHostAsync(
         delete_begin, delete_end, url,
         base::Bind(&ResultSavingCookieCallback<int>::Run,
                    base::Unretained(&callback)));
     callback.WaitUntilDone();
     return callback.result();
   }
 
   // Helper for DeleteAllForHost test; repopulates CM with same layout
   // each time.
-  void PopulateCmForDeleteAllForHost(scoped_refptr<CookieMonster> cm) {
+  void PopulateCmForDeleteAllForHost(CookieMonster* cm) {
     GURL url_top_level_domain_plus_1(kTopLevelDomainPlus1);
     GURL url_top_level_domain_plus_2(kTopLevelDomainPlus2);
     GURL url_top_level_domain_plus_2_secure(kTopLevelDomainPlus2Secure);
     GURL url_top_level_domain_plus_3(kTopLevelDomainPlus3);
     GURL url_other(kOtherDomain);
 
-    this->DeleteAll(cm.get());
+    this->DeleteAll(cm);
 
     // Static population for probe:
     //    * Three levels of domain cookie (.b.a, .c.b.a, .d.c.b.a)
     //    * Three levels of host cookie (w.b.a, w.c.b.a, w.d.c.b.a)
     //    * http_only cookie (w.c.b.a)
     //    * same_site cookie (w.c.b.a)
     //    * Two secure cookies (.c.b.a, w.c.b.a)
     //    * Two domain path cookies (.c.b.a/dir1, .c.b.a/dir1/dir2)
     //    * Two host path cookies (w.c.b.a/dir1, w.c.b.a/dir1/dir2)
 
     // Domain cookies
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_1, "dom_1", "X", ".harvard.edu",
-        "/", base::Time(), base::Time(), base::Time(), false, false, false,
+        cm, url_top_level_domain_plus_1, "dom_1", "X", ".harvard.edu", "/",
+        base::Time(), base::Time(), base::Time(), false, false, false,
         COOKIE_PRIORITY_DEFAULT));
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2, "dom_2", "X",
-        ".math.harvard.edu", "/", base::Time(), base::Time(), base::Time(),
-        false, false, false, COOKIE_PRIORITY_DEFAULT));
+        cm, url_top_level_domain_plus_2, "dom_2", "X", ".math.harvard.edu", "/",
+        base::Time(), base::Time(), base::Time(), false, false, false,
+        COOKIE_PRIORITY_DEFAULT));
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_3, "dom_3", "X",
+        cm, url_top_level_domain_plus_3, "dom_3", "X",
         ".bourbaki.math.harvard.edu", "/", base::Time(), base::Time(),
         base::Time(), false, false, false, COOKIE_PRIORITY_DEFAULT));
 
     // Host cookies
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_1, "host_1", "X", std::string(),
-        "/", base::Time(), base::Time(), base::Time(), false, false, false,
+        cm, url_top_level_domain_plus_1, "host_1", "X", std::string(), "/",
+        base::Time(), base::Time(), base::Time(), false, false, false,
         COOKIE_PRIORITY_DEFAULT));
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2, "host_2", "X", std::string(),
-        "/", base::Time(), base::Time(), base::Time(), false, false, false,
+        cm, url_top_level_domain_plus_2, "host_2", "X", std::string(), "/",
+        base::Time(), base::Time(), base::Time(), false, false, false,
         COOKIE_PRIORITY_DEFAULT));
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_3, "host_3", "X", std::string(),
-        "/", base::Time(), base::Time(), base::Time(), false, false, false,
+        cm, url_top_level_domain_plus_3, "host_3", "X", std::string(), "/",
+        base::Time(), base::Time(), base::Time(), false, false, false,
         COOKIE_PRIORITY_DEFAULT));
 
     // http_only cookie
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2, "httpo_check", "x",
-        std::string(), "/", base::Time(), base::Time(), base::Time(), false,
-        true, false, COOKIE_PRIORITY_DEFAULT));
+        cm, url_top_level_domain_plus_2, "httpo_check", "x", std::string(), "/",
+        base::Time(), base::Time(), base::Time(), false, true, false,
+        COOKIE_PRIORITY_DEFAULT));
 
     // same-site cookie
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2, "firstp_check", "x",
-        std::string(), "/", base::Time(), base::Time(), base::Time(), false,
-        false, true, COOKIE_PRIORITY_DEFAULT));
+        cm, url_top_level_domain_plus_2, "firstp_check", "x", std::string(),
+        "/", base::Time(), base::Time(), base::Time(), false, false, true,
+        COOKIE_PRIORITY_DEFAULT));
 
     // Secure cookies
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2_secure, "sec_dom", "X",
+        cm, url_top_level_domain_plus_2_secure, "sec_dom", "X",
         ".math.harvard.edu", "/", base::Time(), base::Time(), base::Time(),
         true, false, false, COOKIE_PRIORITY_DEFAULT));
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2_secure, "sec_host", "X",
-        std::string(), "/", base::Time(), base::Time(), base::Time(), true,
-        false, false, COOKIE_PRIORITY_DEFAULT));
+        cm, url_top_level_domain_plus_2_secure, "sec_host", "X", std::string(),
+        "/", base::Time(), base::Time(), base::Time(), true, false, false,
+        COOKIE_PRIORITY_DEFAULT));
 
     // Domain path cookies
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2, "dom_path_1", "X",
-        ".math.harvard.edu", "/dir1", base::Time(), base::Time(), base::Time(),
-        false, false, false, COOKIE_PRIORITY_DEFAULT));
+        cm, url_top_level_domain_plus_2, "dom_path_1", "X", ".math.harvard.edu",
+        "/dir1", base::Time(), base::Time(), base::Time(), false, false, false,
+        COOKIE_PRIORITY_DEFAULT));
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2, "dom_path_2", "X",
-        ".math.harvard.edu", "/dir1/dir2", base::Time(), base::Time(),
-        base::Time(), false, false, false, COOKIE_PRIORITY_DEFAULT));
+        cm, url_top_level_domain_plus_2, "dom_path_2", "X", ".math.harvard.edu",
+        "/dir1/dir2", base::Time(), base::Time(), base::Time(), false, false,
+        false, COOKIE_PRIORITY_DEFAULT));
 
     // Host path cookies
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2, "host_path_1", "X",
-        std::string(), "/dir1", base::Time(), base::Time(), base::Time(), false,
-        false, false, COOKIE_PRIORITY_DEFAULT));
+        cm, url_top_level_domain_plus_2, "host_path_1", "X", std::string(),
+        "/dir1", base::Time(), base::Time(), base::Time(), false, false, false,
+        COOKIE_PRIORITY_DEFAULT));
     EXPECT_TRUE(this->SetCookieWithDetails(
-        cm.get(), url_top_level_domain_plus_2, "host_path_2", "X",
-        std::string(), "/dir1/dir2", base::Time(), base::Time(), base::Time(),
-        false, false, false, COOKIE_PRIORITY_DEFAULT));
+        cm, url_top_level_domain_plus_2, "host_path_2", "X", std::string(),
+        "/dir1/dir2", base::Time(), base::Time(), base::Time(), false, false,
+        false, COOKIE_PRIORITY_DEFAULT));
 
-    EXPECT_EQ(14U, this->GetAllCookies(cm.get()).size());
+    EXPECT_EQ(14U, this->GetAllCookies(cm).size());
   }
 
   Time GetFirstCookieAccessDate(CookieMonster* cm) {
     const CookieList all_cookies(this->GetAllCookies(cm));
     return all_cookies.front().LastAccessDate();
   }
 
   bool FindAndDeleteCookie(CookieMonster* cm,
                            const std::string& domain,
                            const std::string& name) {
     CookieList cookies = this->GetAllCookies(cm);
     for (CookieList::iterator it = cookies.begin(); it != cookies.end(); ++it)
       if (it->Domain() == domain && it->Name() == name)
         return this->DeleteCanonicalCookie(cm, *it);
     return false;
   }
 
   int CountInString(const std::string& str, char c) {
     return std::count(str.begin(), str.end(), c);
   }
 
   void TestHostGarbageCollectHelper() {
     int domain_max_cookies = CookieMonster::kDomainMaxCookies;
     int domain_purge_cookies = CookieMonster::kDomainPurgeCookies;
     const int more_than_enough_cookies =
         (domain_max_cookies + domain_purge_cookies) * 2;
     // Add a bunch of cookies on a single host, should purge them.
     {
-      scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+      scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
       for (int i = 0; i < more_than_enough_cookies; ++i) {
         std::string cookie = base::StringPrintf("a%03d=b", i);
         EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), cookie));
         std::string cookies =
             this->GetCookies(cm.get(), http_www_google_.url());
         // Make sure we find it in the cookies.
         EXPECT_NE(cookies.find(cookie), std::string::npos);
         // Count the number of cookies.
         EXPECT_LE(CountInString(cookies, '='), domain_max_cookies);
       }
     }
 
     // Add a bunch of cookies on multiple hosts within a single eTLD.
     // Should keep at least kDomainMaxCookies - kDomainPurgeCookies
     // between them.  We shouldn't go above kDomainMaxCookies for both together.
     GURL url_google_specific(http_www_google_.Format("http://www.gmail.%D"));
     {
-      scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+      scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
       for (int i = 0; i < more_than_enough_cookies; ++i) {
         std::string cookie_general = base::StringPrintf("a%03d=b", i);
         EXPECT_TRUE(
             SetCookie(cm.get(), http_www_google_.url(), cookie_general));
         std::string cookie_specific = base::StringPrintf("c%03d=b", i);
         EXPECT_TRUE(SetCookie(cm.get(), url_google_specific, cookie_specific));
         std::string cookies_general =
             this->GetCookies(cm.get(), http_www_google_.url());
         EXPECT_NE(cookies_general.find(cookie_general), std::string::npos);
         std::string cookies_specific =
@@ skipping 155 matching lines @@
   // of cookies to create. Cookies are created in the order they appear in
   // cookie_entries. The value of cookie_entries[x].num_cookies specifies how
   // many cookies of that type to create consecutively, while if
   // cookie_entries[x].is_secure is |true|, those cookies will be marke as
   // Secure.
   void TestSecureCookieEviction(const CookiesEntry* cookie_entries,
                                 size_t num_cookie_entries,
                                 size_t expected_secure_cookies,
                                 size_t expected_non_secure_cookies,
                                 const AltHosts* alt_host_entries) {
-    scoped_refptr<CookieMonster> cm;
+    scoped_ptr<CookieMonster> cm;
 
     if (alt_host_entries == nullptr) {
-      cm = new CookieMonster(nullptr, nullptr);
+      cm.reset(new CookieMonster(nullptr, nullptr));
     } else {
       // When generating all of these cookies on alternate hosts, they need to
       // be all older than the max "safe" date for GC, which is currently 30
       // days, so we set them to 60.
       cm = CreateMonsterFromStoreForGC(
           alt_host_entries->first, alt_host_entries->first,
           alt_host_entries->second, alt_host_entries->second, 60);
     }
 
     int next_cookie_id = 0;
@@ skipping 24 matching lines @@
     EXPECT_EQ(expected_secure_cookies, total_secure_cookies);
     EXPECT_EQ(expected_non_secure_cookies, total_non_secure_cookies);
   }
 
   void TestPriorityAwareGarbageCollectHelperNonSecure() {
     // Hard-coding limits in the test, but use DCHECK_EQ to enforce constraint.
     DCHECK_EQ(180U, CookieMonster::kDomainMaxCookies);
     DCHECK_EQ(150U, CookieMonster::kDomainMaxCookies -
                         CookieMonster::kDomainPurgeCookies);
 
-    scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+    scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
 
     // Each test case adds 181 cookies, so 31 cookies are evicted.
     // Cookie same priority, repeated for each priority.
     TestPriorityCookieCase(cm.get(), "181LN", 150U, 0U, 0U, 150U, 0U);
     TestPriorityCookieCase(cm.get(), "181MN", 0U, 150U, 0U, 150U, 0U);
     TestPriorityCookieCase(cm.get(), "181HN", 0U, 0U, 150U, 150U, 0U);
 
     // Pairwise scenarios.
     // Round 1 => none; round2 => 31M; round 3 => none.
     TestPriorityCookieCase(cm.get(), "10HN 171MN", 0U, 140U, 10U, 150U, 0U);
@@ skipping 33 matching lines @@
     TestPriorityCookieCase(cm.get(), "11MN 10HN 10LN 90MN 60HN", 0U, 80U, 70U,
                            150U, 0U);
   }
 
   void TestPriorityAwareGarbageCollectHelperSecure() {
     // Hard-coding limits in the test, but use DCHECK_EQ to enforce constraint.
     DCHECK_EQ(180U, CookieMonster::kDomainMaxCookies);
     DCHECK_EQ(150U, CookieMonster::kDomainMaxCookies -
                         CookieMonster::kDomainPurgeCookies);
 
-    scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+    scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
 
     // Each test case adds 181 cookies, so 31 cookies are evicted.
     // Cookie same priority, repeated for each priority.
     TestPriorityCookieCase(cm.get(), "181LS", 150U, 0U, 0U, 0U, 150U);
     TestPriorityCookieCase(cm.get(), "181MS", 0U, 150U, 0U, 0U, 150U);
     TestPriorityCookieCase(cm.get(), "181HS", 0U, 0U, 150U, 0U, 150U);
 
     // Pairwise scenarios.
     // Round 1 => none; round2 => 31M; round 3 => none.
     TestPriorityCookieCase(cm.get(), "10HS 171MS", 0U, 140U, 10U, 0U, 150U);
@@ skipping 33 matching lines @@
     TestPriorityCookieCase(cm.get(), "11MS 10HS 10LS 90MS 60HS", 0U, 80U, 70U,
                            0U, 150U);
   }
 
   void TestPriorityAwareGarbageCollectHelperMixed() {
     // Hard-coding limits in the test, but use DCHECK_EQ to enforce constraint.
     DCHECK_EQ(180U, CookieMonster::kDomainMaxCookies);
     DCHECK_EQ(150U, CookieMonster::kDomainMaxCookies -
                         CookieMonster::kDomainPurgeCookies);
 
-    scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+    scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
 
     // Each test case adds 180 secure cookies, and some non-secure cookie. The
     // secure cookies take priority, so the non-secure cookie is removed, along
     // with 30 secure cookies. Repeated for each priority, and with the
     // non-secure cookie as older and newer.
     TestPriorityCookieCase(cm.get(), "1LN 180LS", 150U, 0U, 0U, 0U, 150U);
     TestPriorityCookieCase(cm.get(), "1MN 180MS", 0U, 150U, 0U, 0U, 150U);
     TestPriorityCookieCase(cm.get(), "1HN 180HS", 0U, 0U, 150U, 0U, 150U);
     TestPriorityCookieCase(cm.get(), "180LS 1LN", 150U, 0U, 0U, 0U, 150U);
     TestPriorityCookieCase(cm.get(), "180MS 1MN", 0U, 150U, 0U, 0U, 150U);
@@ skipping 196 matching lines @@
 // Specifically, for each asynchronous method, verify that:
 // 1. invoking it on an uninitialized cookie store causes the store to begin
 //    chain-loading its backing data or loading data for a specific domain key
 //    (eTLD+1).
 // 2. The initial invocation does not complete until the loading completes.
 // 3. Invocations after the loading has completed complete immediately.
 class DeferredCookieTaskTest : public CookieMonsterTest {
  protected:
   DeferredCookieTaskTest() : expect_load_called_(false) {
     persistent_store_ = new NewMockPersistentCookieStore();
-    cookie_monster_ = new CookieMonster(persistent_store_.get(), NULL);
+    cookie_monster_.reset(new CookieMonster(persistent_store_.get(), nullptr));
   }
 
   // Defines a cookie to be returned from PersistentCookieStore::Load
   void DeclareLoadedCookie(const std::string& key,
                            const std::string& cookie_line,
                            const base::Time& creation_time) {
     AddCookieToList(key, cookie_line, creation_time, &loaded_cookies_);
   }
 
   // Runs the message loop, waiting until PersistentCookieStore::Load is called.
@@ skipping 68 matching lines @@
   CookieMonster::PersistentCookieStore::LoadedCallback loaded_callback_;
   // Stores the callback passed from the CookieMonster to the
   // PersistentCookieStore::LoadCookiesForKey
   std::queue<CookieMonster::PersistentCookieStore::LoadedCallback>
       loaded_for_key_callbacks_;
   // base::RunLoop used to wait for PersistentCookieStore::Load to be called.
   base::RunLoop load_run_loop_;
   // Indicates whether ExpectLoadCall() has been called.
   bool expect_load_called_;
   // Stores the CookieMonster under test.
-  scoped_refptr<CookieMonster> cookie_monster_;
+  scoped_ptr<CookieMonster> cookie_monster_;
   // Stores the mock PersistentCookieStore.
   scoped_refptr<NewMockPersistentCookieStore> persistent_store_;
 };
 
 TEST_F(DeferredCookieTaskTest, DeferredGetCookies) {
   DeclareLoadedCookie(http_www_google_.host(),
                       "X=1; path=/; expires=Mon, 18-Apr-22 22:50:14 GMT",
                       Time::Now() + TimeDelta::FromDays(3));
 
   MockGetCookiesCallback get_cookies_callback;
@@ skipping 322 matching lines @@
   base::RunLoop loop;
   EXPECT_CALL(get_cookies_callback_deferred, Invoke("A=B; X=1"))
       .WillOnce(QuitRunLoop(&loop));
 
   CompleteLoading();
   loop.Run();
 }
 
 TEST_F(CookieMonsterTest, TestCookieDeleteAll) {
   scoped_refptr<MockPersistentCookieStore> store(new MockPersistentCookieStore);
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
   CookieOptions options;
   options.set_include_httponly();
 
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), kValidCookieLine));
   EXPECT_EQ("A=B", GetCookies(cm.get(), http_www_google_.url()));
 
   EXPECT_TRUE(SetCookieWithOptions(cm.get(), http_www_google_.url(),
                                    "C=D; httponly", options));
   EXPECT_EQ("A=B; C=D",
             GetCookiesWithOptions(cm.get(), http_www_google_.url(), options));
@@ skipping 12 matching lines @@
 
   EXPECT_EQ(1, DeleteAll(cm.get()));  // sync_to_store = true.
   ASSERT_EQ(2u, store->commands().size());
   EXPECT_EQ(CookieStoreCommand::REMOVE, store->commands()[1].type);
 
   EXPECT_EQ("",
             GetCookiesWithOptions(cm.get(), http_www_google_.url(), options));
 }
 
 TEST_F(CookieMonsterTest, TestCookieDeleteAllCreatedBetweenTimestamps) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
   Time now = Time::Now();
 
   // Nothing has been added so nothing should be deleted.
   EXPECT_EQ(0, DeleteAllCreatedBetween(cm.get(), now - TimeDelta::FromDays(99),
                                        Time()));
 
   // Create 3 cookies with creation date of today, yesterday and the day before.
   EXPECT_TRUE(
       cm->SetCookieWithCreationTime(http_www_google_.url(), "T-0=Now", now));
   EXPECT_TRUE(cm->SetCookieWithCreationTime(
@@ skipping 21 matching lines @@
   // Delete the last (now) item.
   EXPECT_EQ(1, DeleteAllCreatedBetween(cm.get(), Time(), Time()));
 
   // Really make sure everything is gone.
   EXPECT_EQ(0, DeleteAll(cm.get()));
 }
 
 static const int kAccessDelayMs = kLastAccessThresholdMilliseconds + 20;
 
 TEST_F(CookieMonsterTest, TestLastAccess) {
-  scoped_refptr<CookieMonster> cm(
-      new CookieMonster(NULL, NULL, kLastAccessThresholdMilliseconds));
+  scoped_ptr<CookieMonster> cm(
+      new CookieMonster(nullptr, nullptr, kLastAccessThresholdMilliseconds));
 
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=B"));
   const Time last_access_date(GetFirstCookieAccessDate(cm.get()));
 
   // Reading the cookie again immediately shouldn't update the access date,
   // since we're inside the threshold.
   EXPECT_EQ("A=B", GetCookies(cm.get(), http_www_google_.url()));
   EXPECT_EQ(last_access_date, GetFirstCookieAccessDate(cm.get()));
 
   // Reading after a short wait will update the access date, if the cookie
@@ skipping 34 matching lines @@
 
 TEST_F(CookieMonsterTest, TestPriorityAwareGarbageCollectionSecure) {
   TestPriorityAwareGarbageCollectHelperSecure();
 }
 
 TEST_F(CookieMonsterTest, TestPriorityAwareGarbageCollectionMixed) {
   TestPriorityAwareGarbageCollectHelperMixed();
 }
 
 TEST_F(CookieMonsterTest, SetCookieableSchemes) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
-  scoped_refptr<CookieMonster> cm_foo(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
+  scoped_ptr<CookieMonster> cm_foo(new CookieMonster(nullptr, nullptr));
 
   // Only cm_foo should allow foo:// cookies.
   std::vector<std::string> schemes;
   schemes.push_back("foo");
   cm_foo->SetCookieableSchemes(schemes);
 
   GURL foo_url("foo://host/path");
   GURL http_url("http://host/path");
 
   EXPECT_TRUE(SetCookie(cm.get(), http_url, "x=1"));
   EXPECT_FALSE(SetCookie(cm.get(), foo_url, "x=1"));
   EXPECT_TRUE(SetCookie(cm_foo.get(), foo_url, "x=1"));
   EXPECT_FALSE(SetCookie(cm_foo.get(), http_url, "x=1"));
 }
 
 TEST_F(CookieMonsterTest, GetAllCookiesForURL) {
-  scoped_refptr<CookieMonster> cm(
-      new CookieMonster(NULL, NULL, kLastAccessThresholdMilliseconds));
+  scoped_ptr<CookieMonster> cm(
+      new CookieMonster(nullptr, nullptr, kLastAccessThresholdMilliseconds));
 
   // Create an httponly cookie.
   CookieOptions options;
   options.set_include_httponly();
 
   EXPECT_TRUE(SetCookieWithOptions(cm.get(), http_www_google_.url(),
                                    "A=B; httponly", options));
   EXPECT_TRUE(SetCookieWithOptions(cm.get(), http_www_google_.url(),
                                    http_www_google_.Format("C=D; domain=.%D"),
                                    options));
@@ skipping 47 matching lines @@
   EXPECT_EQ(http_www_google_.Format(".%D"), it->Domain());
   EXPECT_EQ("E", it->Name());
 
   ASSERT_TRUE(++it == cookies.end());
 
   // Reading after a short wait should not update the access date.
   EXPECT_EQ(last_access_date, GetFirstCookieAccessDate(cm.get()));
 }
 
 TEST_F(CookieMonsterTest, GetAllCookiesForURLPathMatching) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
   CookieOptions options;
 
   EXPECT_TRUE(SetCookieWithOptions(cm.get(), www_google_foo_.url(),
                                    "A=B; path=/foo;", options));
   EXPECT_TRUE(SetCookieWithOptions(cm.get(), www_google_bar_.url(),
                                    "C=D; path=/bar;", options));
   EXPECT_TRUE(
       SetCookieWithOptions(cm.get(), http_www_google_.url(), "E=F;", options));
 
   CookieList cookies = GetAllCookiesForURL(cm.get(), www_google_foo_.url());
@@ skipping 17 matching lines @@
   EXPECT_EQ("/bar", it->Path());
 
   ASSERT_TRUE(++it != cookies.end());
   EXPECT_EQ("E", it->Name());
   EXPECT_EQ("/", it->Path());
 
   ASSERT_TRUE(++it == cookies.end());
 }
 
 TEST_F(CookieMonsterTest, CookieSorting) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
 
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "B=B1; path=/"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "B=B2; path=/foo"));
   EXPECT_TRUE(
       SetCookie(cm.get(), http_www_google_.url(), "B=B3; path=/foo/bar"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=A1; path=/"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=A2; path=/foo"));
   EXPECT_TRUE(
       SetCookie(cm.get(), http_www_google_.url(), "A=A3; path=/foo/bar"));
 
   // Re-set cookie which should not change sort order.
   EXPECT_TRUE(
       SetCookie(cm.get(), http_www_google_.url(), "B=B3; path=/foo/bar"));
 
   CookieList cookies = GetAllCookies(cm.get());
   ASSERT_EQ(6u, cookies.size());
   // According to RFC 6265 5.3 (11) re-setting this cookie should retain the
   // initial creation-time from above, and the sort order should not change.
   // Chrome's current implementation deviates from the spec so capturing this to
   // avoid any inadvertent changes to this behavior.
   EXPECT_EQ("A3", cookies[0].Value());
   EXPECT_EQ("B3", cookies[1].Value());
   EXPECT_EQ("B2", cookies[2].Value());
   EXPECT_EQ("A2", cookies[3].Value());
   EXPECT_EQ("B1", cookies[4].Value());
   EXPECT_EQ("A1", cookies[5].Value());
 }
 
 TEST_F(CookieMonsterTest, DeleteCookieByName) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
 
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=A1; path=/"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=A2; path=/foo"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=A3; path=/bar"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "B=B1; path=/"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "B=B2; path=/foo"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "B=B3; path=/bar"));
 
   DeleteCookie(cm.get(), http_www_google_.AppendPath("foo/bar"), "A");
 
@@ skipping 55 matching lines @@
                   Time::Now() + TimeDelta::FromDays(2), &initial_cookies);
 
   // Insert 1 cookie with name "Y" on path "/".
   AddCookieToList("www.google.com",
                   "Y=a; path=/; expires=Mon, 18-Apr-22 22:50:14 GMT",
                   Time::Now() + TimeDelta::FromDays(10), &initial_cookies);
 
   // Inject our initial cookies into the mock PersistentCookieStore.
   store->SetLoadExpectation(true, initial_cookies);
 
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
 
   // Verify that duplicates were not imported for path "/".
   // (If this had failed, GetCookies() would have also returned X=1, X=2, X=4).
   EXPECT_EQ("X=3; Y=a", GetCookies(cm.get(), GURL("http://www.google.com/")));
 
   // Verify that same-named cookie on a different path ("/x2") didn't get
   // messed up.
   EXPECT_EQ("X=a1; X=3; Y=a",
             GetCookies(cm.get(), GURL("http://www.google.com/2/x")));
 
@@ skipping 27 matching lines @@
   AddCookieToList("www.google.com", "X=4; path=/", now, &initial_cookies);
 
   AddCookieToList("www.google.com", "Y=1; path=/", earlier, &initial_cookies);
   AddCookieToList("www.google.com", "Y=2; path=/", earlier, &initial_cookies);
   AddCookieToList("www.google.com", "Y=3; path=/", earlier, &initial_cookies);
   AddCookieToList("www.google.com", "Y=4; path=/", earlier, &initial_cookies);
 
   // Inject our initial cookies into the mock PersistentCookieStore.
   store->SetLoadExpectation(true, initial_cookies);
 
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
 
   CookieList list(GetAllCookies(cm.get()));
   EXPECT_EQ(2U, list.size());
   // Confirm that we have one of each.
   std::string name1(list[0].Name());
   std::string name2(list[1].Name());
   EXPECT_TRUE(name1 == "X" || name2 == "X");
   EXPECT_TRUE(name1 == "Y" || name2 == "Y");
   EXPECT_NE(name1, name2);
 }
 
 TEST_F(CookieMonsterTest, CookieMonsterDelegate) {
   scoped_refptr<MockPersistentCookieStore> store(new MockPersistentCookieStore);
   scoped_refptr<MockCookieMonsterDelegate> delegate(
       new MockCookieMonsterDelegate);
-  scoped_refptr<CookieMonster> cm(
-      new CookieMonster(store.get(), delegate.get()));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), delegate.get()));
 
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=B"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "C=D"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "E=F"));
   EXPECT_EQ("A=B; C=D; E=F", GetCookies(cm.get(), http_www_google_.url()));
   ASSERT_EQ(3u, delegate->changes().size());
   EXPECT_FALSE(delegate->changes()[0].second);
   EXPECT_EQ(http_www_google_.url().host(),
             delegate->changes()[0].first.Domain());
   EXPECT_EQ("A", delegate->changes()[0].first.Name());
@@ skipping 58 matching lines @@
   EXPECT_EQ("val1", delegate->changes()[0].first.Value());
   EXPECT_EQ(http_www_google_.url().host(),
             delegate->changes()[1].first.Domain());
   EXPECT_FALSE(delegate->changes()[1].second);
   EXPECT_EQ("a", delegate->changes()[1].first.Name());
   EXPECT_EQ("val2", delegate->changes()[1].first.Value());
   delegate->reset();
 }
 
 TEST_F(CookieMonsterTest, DeleteAllForHost) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
 
   // Test probes:
   //    * Non-secure URL, mid-level (http://w.c.b.a)
   //    * Secure URL, mid-level (https://w.c.b.a)
   //    * URL with path, mid-level (https:/w.c.b.a/dir1/xx)
   // All three tests should nuke only the midlevel host cookie,
   // the http_only cookie, the host secure cookie, and the two host
   // path cookies.  http_only, secure, and paths are ignored by
   // this call, and domain cookies arent touched.
-  PopulateCmForDeleteAllForHost(cm);
+  PopulateCmForDeleteAllForHost(cm.get());
   EXPECT_EQ("dom_1=X; dom_2=X; dom_3=X; host_3=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus3)));
   EXPECT_EQ("dom_1=X; dom_2=X; host_2=X; sec_dom=X; sec_host=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus2Secure)));
   EXPECT_EQ("dom_1=X; host_1=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus1)));
   EXPECT_EQ(
       "dom_path_2=X; host_path_2=X; dom_path_1=X; host_path_1=X; "
       "dom_1=X; dom_2=X; host_2=X; sec_dom=X; sec_host=X",
       GetCookies(cm.get(), GURL(kTopLevelDomainPlus2Secure +
                                 std::string("/dir1/dir2/xxx"))));
 
   EXPECT_EQ(6, DeleteAllCreatedBetweenForHost(cm.get(), base::Time(),
                                               base::Time::Now(),
                                               GURL(kTopLevelDomainPlus2)));
   EXPECT_EQ(8U, GetAllCookies(cm.get()).size());
 
   EXPECT_EQ("dom_1=X; dom_2=X; dom_3=X; host_3=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus3)));
   EXPECT_EQ("dom_1=X; dom_2=X; sec_dom=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus2Secure)));
   EXPECT_EQ("dom_1=X; host_1=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus1)));
   EXPECT_EQ("dom_path_2=X; dom_path_1=X; dom_1=X; dom_2=X; sec_dom=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus2Secure +
                                       std::string("/dir1/dir2/xxx"))));
 
-  PopulateCmForDeleteAllForHost(cm);
+  PopulateCmForDeleteAllForHost(cm.get());
   EXPECT_EQ(6, DeleteAllCreatedBetweenForHost(
                    cm.get(), base::Time(), base::Time::Now(),
                    GURL(kTopLevelDomainPlus2Secure)));
   EXPECT_EQ(8U, GetAllCookies(cm.get()).size());
 
   EXPECT_EQ("dom_1=X; dom_2=X; dom_3=X; host_3=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus3)));
   EXPECT_EQ("dom_1=X; dom_2=X; sec_dom=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus2Secure)));
   EXPECT_EQ("dom_1=X; host_1=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus1)));
   EXPECT_EQ("dom_path_2=X; dom_path_1=X; dom_1=X; dom_2=X; sec_dom=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus2Secure +
                                       std::string("/dir1/dir2/xxx"))));
 
-  PopulateCmForDeleteAllForHost(cm);
+  PopulateCmForDeleteAllForHost(cm.get());
   EXPECT_EQ(6,
             DeleteAllCreatedBetweenForHost(
                 cm.get(), base::Time(), base::Time::Now(),
                 GURL(kTopLevelDomainPlus2Secure + std::string("/dir1/xxx"))));
   EXPECT_EQ(8U, GetAllCookies(cm.get()).size());
 
   EXPECT_EQ("dom_1=X; dom_2=X; dom_3=X; host_3=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus3)));
   EXPECT_EQ("dom_1=X; dom_2=X; sec_dom=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus2Secure)));
   EXPECT_EQ("dom_1=X; host_1=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus1)));
   EXPECT_EQ("dom_path_2=X; dom_path_1=X; dom_1=X; dom_2=X; sec_dom=X",
             GetCookies(cm.get(), GURL(kTopLevelDomainPlus2Secure +
                                       std::string("/dir1/dir2/xxx"))));
 }
 
 TEST_F(CookieMonsterTest, UniqueCreationTime) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
   CookieOptions options;
 
   // Add in three cookies through every public interface to the
   // CookieMonster and confirm that none of them have duplicate
   // creation times.
 
   // SetCookieWithCreationTime and SetCookieWithCreationTimeAndOptions
   // are not included as they aren't going to be public for very much
   // longer.
 
@@ skipping 42 matching lines @@
     if (existing_cookie_it == check_map.end()) {
       check_map.insert(
           TimeCookieMap::value_type(it->CreationDate().ToInternalValue(), *it));
     }
   }
 }
 
 // Mainly a test of GetEffectiveDomain, or more specifically, of the
 // expected behavior of GetEffectiveDomain within the CookieMonster.
 TEST_F(CookieMonsterTest, GetKey) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
 
   // This test is really only interesting if GetKey() actually does something.
   EXPECT_EQ("google.com", cm->GetKey("www.google.com"));
   EXPECT_EQ("google.izzie", cm->GetKey("www.google.izzie"));
   EXPECT_EQ("google.izzie", cm->GetKey(".google.izzie"));
   EXPECT_EQ("bbc.co.uk", cm->GetKey("bbc.co.uk"));
   EXPECT_EQ("bbc.co.uk", cm->GetKey("a.b.c.d.bbc.co.uk"));
   EXPECT_EQ("apple.com", cm->GetKey("a.b.c.d.apple.com"));
   EXPECT_EQ("apple.izzie", cm->GetKey("a.b.c.d.apple.izzie"));
 
@@ skipping 45 matching lines @@
        "/another/path/to/cookie",
        base::Time::Now() + base::TimeDelta::FromSeconds(100),
        true,
        false,
        true,
        COOKIE_PRIORITY_DEFAULT}};
   const int INPUT_DELETE = 1;
 
   // Create new cookies and flush them to the store.
   {
-    scoped_refptr<CookieMonster> cmout(new CookieMonster(store.get(), NULL));
+    scoped_ptr<CookieMonster> cmout(new CookieMonster(store.get(), nullptr));
     for (const CookiesInputInfo* p = input_info;
          p < &input_info[arraysize(input_info)]; p++) {
       EXPECT_TRUE(SetCookieWithDetails(
           cmout.get(), p->url, p->name, p->value, p->domain, p->path,
           base::Time(), p->expiration_time, base::Time(), p->secure,
           p->http_only, p->same_site, p->priority));
     }
     GURL del_url(input_info[INPUT_DELETE]
                      .url.Resolve(input_info[INPUT_DELETE].path)
                      .spec());
     DeleteCookie(cmout.get(), del_url, input_info[INPUT_DELETE].name);
   }
 
   // Create a new cookie monster and make sure that everything is correct
   {
-    scoped_refptr<CookieMonster> cmin(new CookieMonster(store.get(), NULL));
+    scoped_ptr<CookieMonster> cmin(new CookieMonster(store.get(), nullptr));
     CookieList cookies(GetAllCookies(cmin.get()));
     ASSERT_EQ(2u, cookies.size());
     // Ordering is path length, then creation time.  So second cookie
     // will come first, and we need to swap them.
     std::swap(cookies[0], cookies[1]);
     for (int output_index = 0; output_index < 2; output_index++) {
       int input_index = output_index * 2;
       const CookiesInputInfo* input = &input_info[input_index];
       const CanonicalCookie* output = &cookies[output_index];
 
       EXPECT_EQ(input->name, output->Name());
       EXPECT_EQ(input->value, output->Value());
       EXPECT_EQ(input->url.host(), output->Domain());
       EXPECT_EQ(input->path, output->Path());
       EXPECT_LE(current.ToInternalValue(),
                 output->CreationDate().ToInternalValue());
       EXPECT_EQ(input->secure, output->IsSecure());
       EXPECT_EQ(input->http_only, output->IsHttpOnly());
       EXPECT_EQ(input->same_site, output->IsSameSite());
       EXPECT_TRUE(output->IsPersistent());
       EXPECT_EQ(input->expiration_time.ToInternalValue(),
                 output->ExpiryDate().ToInternalValue());
     }
   }
 }
 
 TEST_F(CookieMonsterTest, CookieListOrdering) {
   // Put a random set of cookies into a monster and make sure
   // they're returned in the right order.
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
   EXPECT_TRUE(
       SetCookie(cm.get(), GURL("http://d.c.b.a.google.com/aa/x.html"), "c=1"));
   EXPECT_TRUE(SetCookie(cm.get(), GURL("http://b.a.google.com/aa/bb/cc/x.html"),
                         "d=1; domain=b.a.google.com"));
   EXPECT_TRUE(SetCookie(cm.get(), GURL("http://b.a.google.com/aa/bb/cc/x.html"),
                         "a=4; domain=b.a.google.com"));
   EXPECT_TRUE(SetCookie(cm.get(),
                         GURL("http://c.b.a.google.com/aa/bb/cc/x.html"),
                         "e=1; domain=c.b.a.google.com"));
   EXPECT_TRUE(SetCookie(cm.get(),
@@ skipping 36 matching lines @@
 #if defined(OS_WIN)
 #define MAYBE_GarbageCollectionTriggers DISABLED_GarbageCollectionTriggers
 #else
 #define MAYBE_GarbageCollectionTriggers GarbageCollectionTriggers
 #endif
 
 TEST_F(CookieMonsterTest, MAYBE_GarbageCollectionTriggers) {
   // First we check to make sure that a whole lot of recent cookies
   // doesn't get rid of anything after garbage collection is checked for.
   {
-    scoped_refptr<CookieMonster> cm(
+    scoped_ptr<CookieMonster> cm(
         CreateMonsterForGC(CookieMonster::kMaxCookies * 2));
     EXPECT_EQ(CookieMonster::kMaxCookies * 2, GetAllCookies(cm.get()).size());
     SetCookie(cm.get(), GURL("http://newdomain.com"), "b=2");
     EXPECT_EQ(CookieMonster::kMaxCookies * 2 + 1,
               GetAllCookies(cm.get()).size());
   }
 
   // Now we explore a series of relationships between cookie last access
   // time and size of store to make sure we only get rid of cookies when
   // we really should.
@@ skipping 21 matching lines @@
        CookieMonster::kMaxCookies - CookieMonster::kPurgeCookies},
       {// Old cookies enough to bring below our purge line (which we
        // shouldn't do).
        CookieMonster::kMaxCookies * 2,
        CookieMonster::kMaxCookies * 3 / 2,
        CookieMonster::kMaxCookies * 2,
        CookieMonster::kMaxCookies - CookieMonster::kPurgeCookies}};
 
   for (int ci = 0; ci < static_cast<int>(arraysize(test_cases)); ++ci) {
     const TestCase* test_case = &test_cases[ci];
-    scoped_refptr<CookieMonster> cm(CreateMonsterFromStoreForGC(
+    scoped_ptr<CookieMonster> cm = CreateMonsterFromStoreForGC(
         test_case->num_cookies, test_case->num_old_cookies, 0, 0,
-        CookieMonster::kSafeFromGlobalPurgeDays * 2));
+        CookieMonster::kSafeFromGlobalPurgeDays * 2);
     EXPECT_EQ(test_case->expected_initial_cookies,
               GetAllCookies(cm.get()).size())
         << "For test case " << ci;
     // Will trigger GC
     SetCookie(cm.get(), GURL("http://newdomain.com"), "b=2");
     EXPECT_EQ(test_case->expected_cookies_after_set,
               GetAllCookies(cm.get()).size())
         << "For test case " << ci;
   }
 }
@@ skipping 52 matching lines @@
 
   volatile int callback_count_;
 };
 
 }  // namespace
 
 // Test that FlushStore() is forwarded to the store and callbacks are posted.
 TEST_F(CookieMonsterTest, FlushStore) {
   scoped_refptr<CallbackCounter> counter(new CallbackCounter());
   scoped_refptr<FlushablePersistentStore> store(new FlushablePersistentStore());
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
 
   ASSERT_EQ(0, store->flush_count());
   ASSERT_EQ(0, counter->callback_count());
 
   // Before initialization, FlushStore() should just run the callback.
   cm->FlushStore(base::Bind(&CallbackCounter::Callback, counter.get()));
   base::MessageLoop::current()->RunUntilIdle();
 
   ASSERT_EQ(0, store->flush_count());
   ASSERT_EQ(1, counter->callback_count());
@@ skipping 14 matching lines @@
   ASSERT_EQ(2, counter->callback_count());
 
   // NULL callback is still safe.
   cm->FlushStore(base::Closure());
   base::MessageLoop::current()->RunUntilIdle();
 
   ASSERT_EQ(2, store->flush_count());
   ASSERT_EQ(2, counter->callback_count());
 
   // If there's no backing store, FlushStore() is always a safe no-op.
-  cm = new CookieMonster(NULL, NULL);
+  cm.reset(new CookieMonster(nullptr, nullptr));
   GetAllCookies(cm.get());  // Force init.
   cm->FlushStore(base::Closure());
   base::MessageLoop::current()->RunUntilIdle();
 
   ASSERT_EQ(2, counter->callback_count());
 
   cm->FlushStore(base::Bind(&CallbackCounter::Callback, counter.get()));
   base::MessageLoop::current()->RunUntilIdle();
 
   ASSERT_EQ(3, counter->callback_count());
 }
 
 TEST_F(CookieMonsterTest, SetAllCookies) {
   scoped_refptr<FlushablePersistentStore> store(new FlushablePersistentStore());
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
   cm->SetPersistSessionCookies(true);
 
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "U=V; path=/"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "W=X; path=/foo"));
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "Y=Z; path=/"));
 
   CookieList list;
   list.push_back(CanonicalCookie(http_www_google_.url(), "A", "B",
                                  http_www_google_.url().host(), "/",
                                  base::Time::Now(), base::Time(), base::Time(),
@@ skipping 25 matching lines @@
   ASSERT_TRUE(++it != cookies.end());
   EXPECT_EQ("A", it->Name());
   EXPECT_EQ("B", it->Value());
 
   ASSERT_TRUE(++it != cookies.end());
   EXPECT_EQ("Y", it->Name());
   EXPECT_EQ("Z", it->Value());
 }
 
 TEST_F(CookieMonsterTest, ComputeCookieDiff) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
 
   base::Time now = base::Time::Now();
   base::Time creation_time = now - base::TimeDelta::FromSeconds(1);
 
   CanonicalCookie cookie1(http_www_google_.url(), "A", "B",
                           http_www_google_.url().host(), "/", creation_time,
                           base::Time(), base::Time(), false, false, false,
                           COOKIE_PRIORITY_DEFAULT);
   CanonicalCookie cookie2(http_www_google_.url(), "C", "D",
                           http_www_google_.url().host(), "/", creation_time,
@@ skipping 96 matching lines @@
   EXPECT_FALSE(IsCookieInList(cookie7, cookies_to_add));
   EXPECT_FALSE(IsCookieInList(cookie7, cookies_to_delete));
   EXPECT_TRUE(IsCookieInList(cookie7_with_new_path, cookies_to_add));
   EXPECT_FALSE(IsCookieInList(cookie7_with_new_path, cookies_to_delete));
 }
 
 // Check that DeleteAll does flush (as a sanity check that flush_count()
 // works).
 TEST_F(CookieMonsterTest, DeleteAll) {
   scoped_refptr<FlushablePersistentStore> store(new FlushablePersistentStore());
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
   cm->SetPersistSessionCookies(true);
 
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "X=Y; path=/"));
 
   ASSERT_EQ(0, store->flush_count());
   EXPECT_EQ(1, DeleteAll(cm.get()));
   EXPECT_EQ(1, store->flush_count());
 }
 
 TEST_F(CookieMonsterTest, HistogramCheck) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
   // Should match call in InitializeHistograms, but doesn't really matter
   // since the histogram should have been initialized by the CM construction
   // above.
   base::HistogramBase* expired_histogram = base::Histogram::FactoryGet(
       "Cookie.ExpirationDurationMinutes", 1, 10 * 365 * 24 * 60, 50,
       base::Histogram::kUmaTargetedHistogramFlag);
 
   scoped_ptr<base::HistogramSamples> samples1(
       expired_histogram->SnapshotSamples());
   ASSERT_TRUE(SetCookieWithDetails(
@@ skipping 18 matching lines @@
       std::string(kValidCookieLine) + "; expires=Blarg arg arg";
   scoped_ptr<CanonicalCookie> cookie(CanonicalCookie::Create(
       http_www_google_.url(), cookie_line, Time::Now(), CookieOptions()));
   ASSERT_FALSE(cookie->IsPersistent());
 }
 
 // Test that CookieMonster writes session cookies into the underlying
 // CookieStore if the "persist session cookies" option is on.
 TEST_F(CookieMonsterTest, PersistSessionCookies) {
   scoped_refptr<MockPersistentCookieStore> store(new MockPersistentCookieStore);
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
   cm->SetPersistSessionCookies(true);
 
   // All cookies set with SetCookie are session cookies.
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=B"));
   EXPECT_EQ("A=B", GetCookies(cm.get(), http_www_google_.url()));
 
   // The cookie was written to the backing store.
   EXPECT_EQ(1u, store->commands().size());
   EXPECT_EQ(CookieStoreCommand::ADD, store->commands()[0].type);
   EXPECT_EQ("A", store->commands()[0].cookie.Name());
@@ skipping 15 matching lines @@
   EXPECT_EQ("", GetCookies(cm.get(), http_www_google_.url()));
   EXPECT_EQ(4u, store->commands().size());
   EXPECT_EQ(CookieStoreCommand::REMOVE, store->commands()[3].type);
   EXPECT_EQ("A", store->commands()[3].cookie.Name());
   EXPECT_EQ("C", store->commands()[3].cookie.Value());
 }
 
 // Test the commands sent to the persistent cookie store.
 TEST_F(CookieMonsterTest, PersisentCookieStorageTest) {
   scoped_refptr<MockPersistentCookieStore> store(new MockPersistentCookieStore);
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
 
   // Add a cookie.
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(),
                         "A=B; expires=Mon, 18-Apr-22 22:50:13 GMT"));
   this->MatchCookieLines("A=B", GetCookies(cm.get(), http_www_google_.url()));
   ASSERT_EQ(1u, store->commands().size());
   EXPECT_EQ(CookieStoreCommand::ADD, store->commands()[0].type);
   // Remove it.
   EXPECT_TRUE(SetCookie(cm.get(), http_www_google_.url(), "A=B; max-age=0"));
   this->MatchCookieLines(std::string(),
@@ skipping 48 matching lines @@
                           "boo",
                           domain, path, now2, later, now2, false, false, false,
                           COOKIE_PRIORITY_DEFAULT);
   initial_cookies.push_back(cc);
 
   AddCookieToList(domain, "hello=world; path=" + path, now3, &initial_cookies);
 
   // Inject our initial cookies into the mock PersistentCookieStore.
   store->SetLoadExpectation(true, initial_cookies);
 
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
 
   EXPECT_EQ("foo=bar; hello=world", GetCookies(cm.get(), url));
 }
 
 // Test that cookie source schemes are histogrammed correctly.
 TEST_F(CookieMonsterTest, CookieSourceHistogram) {
   base::HistogramTester histograms;
   const std::string cookie_source_histogram = "Cookie.CookieSourceScheme";
 
   scoped_refptr<MockPersistentCookieStore> store(new MockPersistentCookieStore);
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
 
   histograms.ExpectTotalCount(cookie_source_histogram, 0);
 
   // Set a secure cookie on a cryptographic scheme.
   EXPECT_TRUE(
       SetCookie(cm.get(), https_www_google_.url(), "A=B; path=/; Secure"));
   histograms.ExpectTotalCount(cookie_source_histogram, 1);
   histograms.ExpectBucketCount(
       cookie_source_histogram,
       CookieMonster::COOKIE_SOURCE_SECURE_COOKIE_CRYPTOGRAPHIC_SCHEME, 1);
@@ skipping 46 matching lines @@
       CookieMonster::COOKIE_SOURCE_NONSECURE_COOKIE_NONCRYPTOGRAPHIC_SCHEME, 1);
 }
 
 // Test that cookie delete equivalent histograms are recorded correctly when
 // strict secure cookies are not enabled.
 TEST_F(CookieMonsterTest, CookieDeleteEquivalentHistogramTest) {
   base::HistogramTester histograms;
   const std::string cookie_source_histogram = "Cookie.CookieDeleteEquivalent";
 
   scoped_refptr<MockPersistentCookieStore> store(new MockPersistentCookieStore);
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
 
   // Set a secure cookie from a secure origin
   EXPECT_TRUE(SetCookie(cm.get(), https_www_google_.url(), "A=B; Secure"));
   histograms.ExpectTotalCount(cookie_source_histogram, 1);
   histograms.ExpectBucketCount(cookie_source_histogram,
                                CookieMonster::COOKIE_DELETE_EQUIVALENT_ATTEMPT,
                                1);
 
   // Set a new cookie with a different name from a variety of origins (including
   // the same one).
@@ skipping 44 matching lines @@
   // already existing cookie and is not equivalent.
   EXPECT_TRUE(SetCookie(cm.get(), https_www_google_.url(),
                         "A=E; secure; path=/some/other/path"));
   histograms.ExpectTotalCount(cookie_source_histogram, 9);
   histograms.ExpectBucketCount(cookie_source_histogram,
                                CookieMonster::COOKIE_DELETE_EQUIVALENT_ATTEMPT,
                                7);
 }
 
 TEST_F(CookieMonsterStrictSecureTest, SetSecureCookies) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
   GURL http_url("http://www.google.com");
   GURL http_superdomain_url("http://google.com");
   GURL https_url("https://www.google.com");
 
   // A non-secure cookie can be created from either a URL with a secure or
   // insecure scheme.
   EXPECT_TRUE(SetCookie(cm.get(), http_url, "A=C;"));
   EXPECT_TRUE(SetCookie(cm.get(), https_url, "A=B;"));
 
   // A secure cookie cannot be created from a URL with an insecure scheme.
@@ skipping 174 matching lines @@
   // global purge goal (3000), but the secure cookies are not evicted.
   const CookiesEntry test14[] = {{1U, true}};
   const AltHosts test14_alt_hosts(1500, 1800);
   TestSecureCookieEviction(test14, arraysize(test14), 1501U, 1499,
                            &test14_alt_hosts);
 }
 
 // Tests that strict secure cookies doesn't trip equivalent cookie checks
 // accidentally. Regression test for https://crbug.com/569943.
 TEST_F(CookieMonsterStrictSecureTest, EquivalentCookies) {
-  scoped_refptr<CookieMonster> cm(new CookieMonster(NULL, NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(nullptr, nullptr));
   GURL http_url("http://www.google.com");
   GURL http_superdomain_url("http://google.com");
   GURL https_url("https://www.google.com");
 
   // Tests that non-equivalent cookies because of the path attribute can be set
   // successfully.
   EXPECT_TRUE(SetCookie(cm.get(), https_url, "A=B; Secure"));
   EXPECT_TRUE(SetCookie(cm.get(), https_url, "A=C; path=/some/other/path"));
   EXPECT_FALSE(SetCookie(cm.get(), http_url, "A=D; path=/some/other/path"));
 
   // Tests that non-equivalent cookies because of the domain attribute can be
   // set successfully.
   EXPECT_TRUE(SetCookie(cm.get(), https_url, "A=B; Secure"));
   EXPECT_TRUE(SetCookie(cm.get(), https_url, "A=C; domain=google.com"));
   EXPECT_FALSE(SetCookie(cm.get(), http_url, "A=D; domain=google.com"));
 }
 
 // Test that cookie delete equivalent histograms are recorded correctly for
 // strict secure cookies.
 TEST_F(CookieMonsterStrictSecureTest, CookieDeleteEquivalentHistogramTest) {
   base::HistogramTester histograms;
   const std::string cookie_source_histogram = "Cookie.CookieDeleteEquivalent";
 
   scoped_refptr<MockPersistentCookieStore> store(new MockPersistentCookieStore);
-  scoped_refptr<CookieMonster> cm(new CookieMonster(store.get(), NULL));
+  scoped_ptr<CookieMonster> cm(new CookieMonster(store.get(), nullptr));
 
   // Set a secure cookie from a secure origin
   EXPECT_TRUE(SetCookie(cm.get(), https_www_google_.url(), "A=B; Secure"));
   histograms.ExpectTotalCount(cookie_source_histogram, 1);
   histograms.ExpectBucketCount(cookie_source_histogram,
                                CookieMonster::COOKIE_DELETE_EQUIVALENT_ATTEMPT,
                                1);
 
   // Set a new cookie with a different name from a variety of origins (including
   // the same one).
@@ skipping 54 matching lines @@
   histograms.ExpectBucketCount(cookie_source_histogram,
                                CookieMonster::COOKIE_DELETE_EQUIVALENT_ATTEMPT,
                                7);
 }
 
 class CookieMonsterNotificationTest : public CookieMonsterTest {
  public:
   CookieMonsterNotificationTest()
       : test_url_("http://www.google.com/foo"),
         store_(new MockPersistentCookieStore),
-        monster_(new CookieMonster(store_.get(), NULL)) {}
+        monster_(new CookieMonster(store_.get(), nullptr)) {}
 
   ~CookieMonsterNotificationTest() override {}
 
   CookieMonster* monster() { return monster_.get(); }
 
  protected:
   const GURL test_url_;
 
  private:
   scoped_refptr<MockPersistentCookieStore> store_;
-  scoped_refptr<CookieMonster> monster_;
+  scoped_ptr<CookieMonster> monster_;
 };
 
 void RecordCookieChanges(std::vector<CanonicalCookie>* out_cookies,
                          std::vector<bool>* out_removes,
                          const CanonicalCookie& cookie,
                          bool removed) {
   DCHECK(out_cookies);
   out_cookies->push_back(cookie);
   if (out_removes)
     out_removes->push_back(removed);
@@ skipping 120 matching lines @@
       monster()->AddCallbackForCookie(
           test_url_, "abc",
           base::Bind(&RecordCookieChanges, &cookies1, nullptr)));
   SetCookie(monster(), test_url_, "abc=def");
   base::MessageLoop::current()->RunUntilIdle();
   EXPECT_EQ(1U, cookies0.size());
   EXPECT_EQ(1U, cookies0.size());
 }
 
 }  // namespace net