[Sync] Replacing NULL with nullptr in code and null in comments for components/sync/

components/sync/engine_impl/apply_control_data_updates_unittest.cc

 // Copyright 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/sync/engine_impl/apply_control_data_updates.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 115 matching lines @@
 
     Syncer::UnsyncedMetaHandles handles;
     GetUnsyncedEntries(&trans, &handles);
     EXPECT_TRUE(handles.empty());
   }
 
   // Create unsynced bookmarks without encryption.
   // First item is a folder
   Id folder_id = id_factory_.NewLocalId();
   entry_factory_->CreateUnsyncedItem(folder_id, id_factory_.root(), "folder",
-                                     true, BOOKMARKS, NULL);
+                                     true, BOOKMARKS, nullptr);
   // Next five items are children of the folder
   size_t i;
   size_t batch_s = 5;
   for (i = 0; i < batch_s; ++i) {
     entry_factory_->CreateUnsyncedItem(id_factory_.NewLocalId(), folder_id,
                                        base::StringPrintf("Item %" PRIuS "", i),
-                                       false, BOOKMARKS, NULL);
+                                       false, BOOKMARKS, nullptr);
   }
   // Next five items are children of the root.
   for (; i < 2 * batch_s; ++i) {
     entry_factory_->CreateUnsyncedItem(
         id_factory_.NewLocalId(), id_factory_.root(),
-        base::StringPrintf("Item %" PRIuS "", i), false, BOOKMARKS, NULL);
+        base::StringPrintf("Item %" PRIuS "", i), false, BOOKMARKS, nullptr);
   }
 
   KeyParams params = {"localhost", "dummy", "foobar"};
   cryptographer->AddKey(params);
   sync_pb::EntitySpecifics specifics;
   sync_pb::NigoriSpecifics* nigori = specifics.mutable_nigori();
   cryptographer->GetKeys(nigori->mutable_encryption_keybag());
   nigori->set_encrypt_everything(true);
   encrypted_types.Put(BOOKMARKS);
   entry_factory_->CreateUnappliedNewItem(ModelTypeToRootTag(NIGORI), specifics,
@@ skipping 77 matching lines @@
 
     Syncer::UnsyncedMetaHandles handles;
     GetUnsyncedEntries(&trans, &handles);
     EXPECT_TRUE(handles.empty());
   }
 
   // Create unsynced bookmarks without encryption.
   // First item is a folder
   Id folder_id = id_factory_.NewLocalId();
   entry_factory_->CreateUnsyncedItem(folder_id, id_factory_.root(), "folder",
-                                     true, BOOKMARKS, NULL);
+                                     true, BOOKMARKS, nullptr);
   // Next five items are children of the folder
   size_t i;
   size_t batch_s = 5;
   for (i = 0; i < batch_s; ++i) {
     entry_factory_->CreateUnsyncedItem(id_factory_.NewLocalId(), folder_id,
                                        base::StringPrintf("Item %" PRIuS "", i),
-                                       false, BOOKMARKS, NULL);
+                                       false, BOOKMARKS, nullptr);
   }
   // Next five items are children of the root.
   for (; i < 2 * batch_s; ++i) {
     entry_factory_->CreateUnsyncedItem(
         id_factory_.NewLocalId(), id_factory_.root(),
-        base::StringPrintf("Item %" PRIuS "", i), false, BOOKMARKS, NULL);
+        base::StringPrintf("Item %" PRIuS "", i), false, BOOKMARKS, nullptr);
   }
 
   // We encrypt with new keys, triggering the local cryptographer to be unready
   // and unable to decrypt data (once updated).
   Cryptographer other_cryptographer(cryptographer->encryptor());
   KeyParams params = {"localhost", "dummy", "foobar"};
   other_cryptographer.AddKey(params);
   sync_pb::EntitySpecifics specifics;
   sync_pb::NigoriSpecifics* nigori = specifics.mutable_nigori();
   other_cryptographer.GetKeys(nigori->mutable_encryption_keybag());
@@ skipping 699 matching lines @@
   ApplyControlDataUpdates(directory());
 
   // After applying the updates NIGORI should be marked as having its
   // initial sync completed.
   EXPECT_TRUE(directory()->InitialSyncEndedForType(NIGORI));
   // Verify that there is no side effect on another control type.
   EXPECT_FALSE(directory()->InitialSyncEndedForType(EXPERIMENTS));
 }
 
 }  // namespace syncer