Refactor net::NetLog to provide implementation of observer pattern, not just the interface.

net/tools/gdig/file_net_log.cc

Index: net/tools/gdig/file_net_log.cc
diff --git a/net/tools/gdig/file_net_log.cc b/net/tools/gdig/file_net_log.cc
index 51cf78d60e0f8b8949c37f32a0dbace2e3b5e8b6..7c755c855fe129fc1247958526b2fb6aea74e9f4 100644
--- a/net/tools/gdig/file_net_log.cc
+++ b/net/tools/gdig/file_net_log.cc
@@ -12,24 +12,20 @@
 
 namespace net {
 
-FileNetLog::FileNetLog(FILE* destination, LogLevel level)
-    : log_level_(level),
-      destination_(destination) {
+FileNetLogObserver::FileNetLogObserver(FILE* destination)
+    : destination_(destination) {
   DCHECK(destination != NULL);
-  // Without calling GetNext() once here, the first GetNext will return 0
-  // that is not a valid id.
-  sequence_number_.GetNext();
 }
 
-FileNetLog::~FileNetLog() {
+FileNetLogObserver::~FileNetLogObserver() {
 }
 
-void FileNetLog::OnAddEntry(const net::NetLog::Entry& entry) {
+void FileNetLogObserver::OnAddEntry(const net::NetLog::Entry& entry) {
   // Only BoundNetLogs without a NetLog should have an invalid source.
   DCHECK(entry.source().IsValid());
 
-  const char* source = SourceTypeToString(entry.source().type);
-  const char* type = EventTypeToString(entry.type());
+  const char* source = NetLog::SourceTypeToString(entry.source().type);
+  const char* type = NetLog::EventTypeToString(entry.type());
 
   scoped_ptr<Value> param_value(entry.ParametersToValue());
   std::string params;
@@ -49,28 +45,4 @@ void FileNetLog::OnAddEntry(const net::NetLog::Entry& entry) {
           entry.source().id, source, type, params.c_str());
 }
 
-uint32 FileNetLog::NextID() {
-  return sequence_number_.GetNext();
-}
-
-NetLog::LogLevel FileNetLog::GetLogLevel() const {
-  return log_level_;
-}
-
-void FileNetLog::AddThreadSafeObserver(
-    NetLog::ThreadSafeObserver* observer,
-    NetLog::LogLevel log_level) {
-  NOTIMPLEMENTED() << "Not currently used by gdig.";
-}
-
-void FileNetLog::SetObserverLogLevel(ThreadSafeObserver* observer,
-                                          LogLevel log_level) {
-  NOTIMPLEMENTED() << "Not currently used by gdig.";
-}
-
-void FileNetLog::RemoveThreadSafeObserver(
-    NetLog::ThreadSafeObserver* observer) {
-  NOTIMPLEMENTED() << "Not currently used by gdig.";
-}
-
 }  // namespace net