Extracted NetLog class's inner enum types into their own enum classes and

components/cronet/android/url_request_context_adapter.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 "components/cronet/android/url_request_context_adapter.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <limits>
@@ skipping 298 matching lines @@
 
 void URLRequestContextAdapter::StopNetLogHelper() {
   DCHECK(GetNetworkTaskRunner()->BelongsToCurrentThread());
   if (write_to_file_observer_) {
     write_to_file_observer_->StopObserving(context_.get());
     write_to_file_observer_.reset();
   }
 }
 
 void NetLogObserver::OnAddEntry(const net::NetLog::Entry& entry) {
-  VLOG(2) << "Net log entry: type=" << entry.type()
-          << ", source=" << entry.source().type << ", phase=" << entry.phase();
+  VLOG(2) << "Net log entry: type=" << static_cast<int>(entry.type())
+          << ", source=" << static_cast<int>(entry.source().type)
+          << ", phase=" << static_cast<int>(entry.phase());
 }
 
 }  // namespace cronet