Make base::Value::TYPE a scoped enum.

chrome/browser/extensions/alert_apitest.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 <stddef.h>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 37 matching lines @@
 void CancelDialog() {
   app_modal::NativeAppModalDialog* dialog = nullptr;
   ASSERT_NO_FATAL_FAILURE(GetNextDialog(&dialog));
   dialog->CancelAppModalDialog();
 }
 
 void CheckAlertResult(const std::string& dialog_name,
                       size_t* call_count,
                       const base::Value* value) {
   ASSERT_TRUE(value) << dialog_name;
-  ASSERT_TRUE(value->IsType(base::Value::TYPE_NULL));
+  ASSERT_TRUE(value->IsType(base::Value::Type::NONE));
   ++*call_count;
 }
 
 void CheckConfirmResult(const std::string& dialog_name,
                         bool expected_value,
                         size_t* call_count,
                         const base::Value* value) {
   ASSERT_TRUE(value) << dialog_name;
   bool current_value;
   ASSERT_TRUE(value->GetAsBoolean(&current_value)) << dialog_name;
@@ skipping 90 matching lines @@
 
   // All dialogs must be closed now.
   app_modal::AppModalDialogQueue* queue =
       app_modal::AppModalDialogQueue::GetInstance();
   ASSERT_TRUE(queue);
   EXPECT_FALSE(queue->HasActiveDialog());
   EXPECT_EQ(0, queue->end() - queue->begin());
   while (call_count < num_accepted_dialogs + num_cancelled_dialogs)
     ASSERT_NO_FATAL_FAILURE(content::RunAllPendingInMessageLoop());
 }