Promote "netlog" tracing category to a default category

net/base/trace_net_log_observer_unittest.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 <string>
 #include <vector>
 
 #include "base/json/json_reader.h"
@@ skipping 10 matching lines @@
 #include "net/base/net_log.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::trace_event::TraceLog;
 
 namespace net {
 
 namespace {
 
 // TraceLog category for NetLog events.
-const char kNetLogTracingCategory[] = TRACE_DISABLED_BY_DEFAULT("netlog");
+const char kNetLogTracingCategory[] = "netlog";
 
 struct TraceEntryInfo {
   std::string category;
   std::string id;
   std::string phase;
   std::string name;
   std::string source_type;
 };
 
 TraceEntryInfo GetTraceEntryInfoFromValue(const base::DictionaryValue& value) {
@@ skipping 327 matching lines @@
   EXPECT_TRUE(item1->GetString("args.params.foo", &item1_params));
   EXPECT_EQ("bar", item1_params);
 
   EXPECT_TRUE(item2->GetString("args.params", &item2_params));
   EXPECT_TRUE(item2_params.empty());
 }
 
 }  // namespace
 
 }  // namespace net