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

net/log/test_net_log.cc

Index: net/log/test_net_log.cc
diff --git a/net/log/test_net_log.cc b/net/log/test_net_log.cc
index 3287cf0a9d4d53bf5827979e72c212eec8c174a2..1fc5a8b47a6b93c97d45a89073516fb002859d56 100644
--- a/net/log/test_net_log.cc
+++ b/net/log/test_net_log.cc
@@ -7,6 +7,7 @@
 #include "base/macros.h"
 #include "base/synchronization/lock.h"
 #include "base/values.h"
+#include "net/log/net_log_source_type.h"
 
 namespace net {
 
@@ -103,8 +104,7 @@ NetLog::ThreadSafeObserver* TestNetLog::GetObserver() const {
 }
 
 BoundTestNetLog::BoundTestNetLog()
-    : net_log_(BoundNetLog::Make(&test_net_log_, NetLog::SOURCE_NONE)) {
-}
+    : net_log_(BoundNetLog::Make(&test_net_log_, NetLogSourceType::NONE)) {}
 
 BoundTestNetLog::~BoundTestNetLog() {
 }