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

net/log/write_to_file_net_log_observer_unittest.cc

Index: net/log/write_to_file_net_log_observer_unittest.cc
diff --git a/net/log/write_to_file_net_log_observer_unittest.cc b/net/log/write_to_file_net_log_observer_unittest.cc
index c1ab52f36f3ce9e42e0fa5d072c51f6ded074d64..67f410abffce9ee2a8f76b762953568ab6a01b2a 100644
--- a/net/log/write_to_file_net_log_observer_unittest.cc
+++ b/net/log/write_to_file_net_log_observer_unittest.cc
@@ -14,6 +14,8 @@
 #include "base/json/json_reader.h"
 #include "base/values.h"
 #include "net/log/net_log.h"
+#include "net/log/net_log_event_type.h"
+#include "net/log/net_log_source_type.h"
 #include "net/log/net_log_util.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
@@ -89,9 +91,9 @@ TEST_F(WriteToFileNetLogObserverTest, GeneratesValidJSONWithOneEvent) {
   logger->StartObserving(&net_log_, std::move(file), nullptr, nullptr);
 
   const int kDummyId = 1;
-  NetLog::Source source(NetLog::SOURCE_HTTP2_SESSION, kDummyId);
-  NetLog::EntryData entry_data(NetLog::TYPE_PROXY_SERVICE, source,
-                               NetLog::PHASE_BEGIN, base::TimeTicks::Now(),
+  NetLog::Source source(NetLogSourceType::HTTP2_SESSION, kDummyId);
+  NetLog::EntryData entry_data(NetLogEventType::PROXY_SERVICE, source,
+                               NetLogEventPhase::BEGIN, base::TimeTicks::Now(),
                                NULL);
   NetLog::Entry entry(&entry_data, NetLogCaptureMode::IncludeSocketBytes());
   logger->OnAddEntry(entry);
@@ -120,9 +122,9 @@ TEST_F(WriteToFileNetLogObserverTest, GeneratesValidJSONWithMultipleEvents) {
   logger->StartObserving(&net_log_, std::move(file), nullptr, nullptr);
 
   const int kDummyId = 1;
-  NetLog::Source source(NetLog::SOURCE_HTTP2_SESSION, kDummyId);
-  NetLog::EntryData entry_data(NetLog::TYPE_PROXY_SERVICE, source,
-                               NetLog::PHASE_BEGIN, base::TimeTicks::Now(),
+  NetLog::Source source(NetLogSourceType::HTTP2_SESSION, kDummyId);
+  NetLog::EntryData entry_data(NetLogEventType::PROXY_SERVICE, source,
+                               NetLogEventPhase::BEGIN, base::TimeTicks::Now(),
                                NULL);
   NetLog::Entry entry(&entry_data, NetLogCaptureMode::IncludeSocketBytes());