Promote "netlog" tracing category to a default category

net/base/trace_net_log_observer.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/trace_net_log_observer.h"
 
 #include <stdio.h>
 
 #include <string>
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/trace_event/trace_event.h"
 #include "base/values.h"
 #include "net/base/net_log.h"
 
 namespace net {
 
 namespace {
 
 // TraceLog category for NetLog events.
-const char kNetLogTracingCategory[] = TRACE_DISABLED_BY_DEFAULT("netlog");
+const char kNetLogTracingCategory[] = "netlog";
 
 class TracedValue : public base::trace_event::ConvertableToTraceFormat {
  public:
   explicit TracedValue(scoped_ptr<base::Value> value) : value_(value.Pass()) {}
 
  private:
   ~TracedValue() override {}
 
   void AppendAsTraceFormat(std::string* out) const override {
     if (value_) {
@@ skipping 69 matching lines @@
   net_log_to_watch_->AddThreadSafeObserver(this,
                                            NetLog::LOG_STRIP_PRIVATE_DATA);
 }
 
 void TraceNetLogObserver::OnTraceLogDisabled() {
   if (net_log())
     net_log()->RemoveThreadSafeObserver(this);
 }
 
 }  // namespace net