Run clang-modernize -use-nullptr over src/extensions/.

extensions/browser/api/hid/hid_api.cc

 // Copyright 2014 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 "extensions/browser/api/hid/hid_api.h"
 
 #include <string>
 #include <vector>
 
 #include "device/core/device_client.h"
@@ skipping 41 matching lines @@
   if (input->usage) {
     output->SetUsage(*input->usage);
   }
 }
 
 }  // namespace
 
 namespace extensions {
 
 HidAsyncApiFunction::HidAsyncApiFunction()
-    : device_manager_(NULL), connection_manager_(NULL) {}
+    : device_manager_(nullptr), connection_manager_(nullptr) {
+}
 
 HidAsyncApiFunction::~HidAsyncApiFunction() {}
 
 bool HidAsyncApiFunction::PrePrepare() {
   device_manager_ = HidDeviceManager::Get(browser_context());
   DCHECK(device_manager_);
   connection_manager_ =
       ApiResourceManager<HidConnectionResource>::Get(browser_context());
   DCHECK(connection_manager_);
   set_work_thread_id(content::BrowserThread::FILE);
@@ skipping 254 matching lines @@
 
 void HidSendFeatureReportFunction::OnFinished(bool success) {
   if (!success) {
     CompleteWithError(kErrorTransfer);
     return;
   }
   AsyncWorkCompleted();
 }
 
 }  // namespace extensions