Extracting NetLog inner classes into their own classes.

net/log/write_to_file_net_log_observer.cc

Index: net/log/write_to_file_net_log_observer.cc
diff --git a/net/log/write_to_file_net_log_observer.cc b/net/log/write_to_file_net_log_observer.cc
index f724da49efabb9541970484f272db549db8f980f..5470ebbcd44d2d880fe9b1a4d8c387ea5db9f7f2 100644
--- a/net/log/write_to_file_net_log_observer.cc
+++ b/net/log/write_to_file_net_log_observer.cc
@@ -13,6 +13,7 @@
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/values.h"
+#include "net/log/net_log_entry.h"
 #include "net/log/net_log_util.h"
 #include "net/url_request/url_request_context.h"
 
@@ -87,7 +88,7 @@ void WriteToFileNetLogObserver::StopObserving(
   file_.reset();
 }
 
-void WriteToFileNetLogObserver::OnAddEntry(const NetLog::Entry& entry) {
+void WriteToFileNetLogObserver::OnAddEntry(const NetLogEntry& entry) {
   // Add a comma and newline for every event but the first.  Newlines are needed
   // so can load partial log files by just ignoring the last line.  For this to
   // work, lines cannot be pretty printed.