Add thread name and number to cobalt log output. (#3051)

The default logging items exclude the thread. This enables the thread
prefix on the log output.

b/223411660

cobalt/base/init_cobalt.cc

@@ -37,6 +37,12 @@ base::LazyInstance<std::string>::DestructorAtExit::DestructorAtExit
 
 void InitCobalt(int argc, char* argv[], const char* link) {
   base::CommandLine::Init(argc, argv);
+
+  logging::LoggingSettings settings;
+  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
+  logging::InitLogging(settings);
+  logging::SetLogItems(false, true, true, false);
+
   if (link) {
     s_initial_deep_link.Get() = link;
   }