Make base::MessageLoops have names at construction time

content/worker/worker_main.cc

Index: content/worker/worker_main.cc
diff --git a/content/worker/worker_main.cc b/content/worker/worker_main.cc
index 88acc213f47224b7e0dccd0fce22b519bc84f42d..1a51d3a59c397dcac0dd76ea2cbb498691bb0ca0 100644
--- a/content/worker/worker_main.cc
+++ b/content/worker/worker_main.cc
@@ -7,7 +7,6 @@
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/system_monitor/system_monitor.h"
-#include "base/threading/platform_thread.h"
 #include "content/common/child_process.h"
 #include "content/common/hi_res_timer_manager.h"
 #include "content/common/main_function_params.h"
@@ -21,8 +20,7 @@
 // Mainline routine for running as the worker process.
 int WorkerMain(const MainFunctionParams& parameters) {
   // The main message loop of the worker process.
-  MessageLoop main_message_loop;
-  base::PlatformThread::SetName("CrWorkerMain");
+  MessageLoop main_message_loop("CrWorkerMain");
 
   base::SystemMonitor system_monitor;
   HighResolutionTimerManager hi_res_timer_manager;