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

components/dom_distiller/core/distiller_page.cc

 // Copyright 2013 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/dom_distiller/core/distiller_page.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
@@ skipping 76 matching lines @@
 }
 
 void DistillerPage::OnDistillationDone(const GURL& page_url,
                                        const base::Value* value) {
   DCHECK(!ready_);
   ready_ = true;
 
   std::unique_ptr<dom_distiller::proto::DomDistillerResult> distiller_result(
       new dom_distiller::proto::DomDistillerResult());
   bool found_content;
-  if (value->IsType(base::Value::TYPE_NULL)) {
+  if (value->IsType(base::Value::Type::NONE)) {
     found_content = false;
   } else {
     found_content =
         dom_distiller::proto::json::DomDistillerResult::ReadFromValue(
             value, distiller_result.get());
     if (!found_content) {
       DVLOG(1) << "Unable to parse DomDistillerResult.";
     } else {
       base::TimeDelta distillation_time =
           base::TimeTicks::Now() - distillation_start_;
@@ skipping 45 matching lines @@
       }
     }
   }
 
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(distiller_page_callback_,
                             base::Passed(&distiller_result), found_content));
 }
 
 }  // namespace dom_distiller