[Sync] Replacing NULL with nullptr/null throughout sync code.

chrome/browser/sync/test/integration/sync_extension_helper.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/sync/test/integration/sync_extension_helper.h"
 
 #include <list>
 #include <memory>
 #include <utility>
 
@@ skipping 170 matching lines @@
   // extension from the extensions service's copy.
   const extensions::PendingExtensionManager* pending_extension_manager =
       extensions::ExtensionSystem::Get(profile)
           ->extension_service()
           ->pending_extension_manager();
 
   std::list<std::string> pending_crx_ids;
   pending_extension_manager->GetPendingIdsForUpdateCheck(&pending_crx_ids);
 
   std::list<std::string>::const_iterator iter;
-  const extensions::PendingExtensionInfo* info = NULL;
+  const extensions::PendingExtensionInfo* info = nullptr;
   for (iter = pending_crx_ids.begin(); iter != pending_crx_ids.end(); ++iter) {
     ASSERT_TRUE(info = pending_extension_manager->GetById(*iter));
     if (!info->is_from_sync())
       continue;
 
     StringMap::const_iterator iter2 = id_to_name_.find(*iter);
     if (iter2 == id_to_name_.end()) {
       ADD_FAILURE() << "Could not get name for id " << *iter
                     << " (profile = " << profile->GetDebugName() << ")";
       continue;
@@ skipping 150 matching lines @@
       source.Set(extensions::manifest_keys::kPlatformAppBackground,
                  new base::DictionaryValue());
       base::ListValue* scripts = new base::ListValue();
       scripts->AppendString("main.js");
       source.Set(extensions::manifest_keys::kPlatformAppBackgroundScripts,
                  scripts);
       break;
     }
     default:
       ADD_FAILURE();
-      return NULL;
+      return nullptr;
   }
   const base::FilePath sub_dir = base::FilePath().AppendASCII(name);
   base::FilePath extension_dir;
   if (!base::PathExists(base_dir) &&
       !base::CreateDirectory(base_dir)) {
     ADD_FAILURE();
-    return NULL;
+    return nullptr;
   }
   if (!base::CreateTemporaryDirInDir(base_dir, sub_dir.value(),
                                      &extension_dir)) {
     ADD_FAILURE();
-    return NULL;
+    return nullptr;
   }
   std::string error;
   scoped_refptr<Extension> extension =
       Extension::Create(extension_dir, Manifest::INTERNAL, source,
                         Extension::NO_FLAGS, &error);
   if (!error.empty()) {
     ADD_FAILURE() << error;
-    return NULL;
+    return nullptr;
   }
   if (!extension.get()) {
     ADD_FAILURE();
-    return NULL;
+    return nullptr;
   }
   if (extension->name() != name) {
     EXPECT_EQ(name, extension->name());
-    return NULL;
+    return nullptr;
   }
   if (extension->GetType() != type) {
     EXPECT_EQ(type, extension->GetType());
-    return NULL;
+    return nullptr;
   }
   return extension;
 }
 
 }  // namespace
 
 scoped_refptr<Extension> SyncExtensionHelper::GetExtension(
     Profile* profile, const std::string& name, Manifest::Type type) {
   if (name.empty()) {
     ADD_FAILURE();
-    return NULL;
+    return nullptr;
   }
   ProfileExtensionNameMap::iterator it = profile_extensions_.find(profile);
   if (it == profile_extensions_.end()) {
     ADD_FAILURE();
-    return NULL;
+    return nullptr;
   }
   ExtensionNameMap::const_iterator it2 = it->second.find(name);
   if (it2 != it->second.end()) {
     return it2->second;
   }
 
   scoped_refptr<Extension> extension =
       CreateExtension(extensions::ExtensionSystem::Get(profile)
                           ->extension_service()
                           ->install_directory(),
                       name,
                       type);
   if (!extension.get()) {
     ADD_FAILURE();
-    return NULL;
+    return nullptr;
   }
   const std::string& expected_id = crx_file::id_util::GenerateId(name);
   if (extension->id() != expected_id) {
     EXPECT_EQ(expected_id, extension->id());
-    return NULL;
+    return nullptr;
   }
   DVLOG(2) << "created extension with name = "
            << name << ", id = " << expected_id;
   (it->second)[name] = extension;
   id_to_name_[expected_id] = name;
   id_to_type_[expected_id] = type;
   return extension;
 }