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

chrome/browser/net/chrome_network_delegate.cc

Index: chrome/browser/net/chrome_network_delegate.cc
diff --git a/chrome/browser/net/chrome_network_delegate.cc b/chrome/browser/net/chrome_network_delegate.cc
index 3b93f1238272036fa77ca3918193390ab0a18c10..6dd36c0cb099a74903ac99bd6ab1c0025f028a76 100644
--- a/chrome/browser/net/chrome_network_delegate.cc
+++ b/chrome/browser/net/chrome_network_delegate.cc
@@ -59,6 +59,7 @@
 #include "net/http/http_response_headers.h"
 #include "net/http/http_status_code.h"
 #include "net/log/net_log.h"
+#include "net/log/net_log_event_type.h"
 #include "net/url_request/url_request.h"
 
 #if BUILDFLAG(ANDROID_JAVA_UI)
@@ -249,7 +250,7 @@ int ChromeNetworkDelegate::OnBeforeURLRequest(
           request->url(), &error)) {
     // URL access blocked by policy.
     request->net_log().AddEvent(
-        net::NetLog::TYPE_CHROME_POLICY_ABORTED_REQUEST,
+        net::NetLogEventType::CHROME_POLICY_ABORTED_REQUEST,
         net::NetLog::StringCallback("url",
                                     &request->url().possibly_invalid_spec()));
     return error;