Lazily initialize MessageLoop for faster thread startup

base/threading/platform_thread_win.cc

Index: base/threading/platform_thread_win.cc
diff --git a/base/threading/platform_thread_win.cc b/base/threading/platform_thread_win.cc
index 3df371943f5e6fdf1a91175802b7fb36f78d9aba..6e488a2f8a13bf7f92fc078f4a0fdfbca980297c 100644
--- a/base/threading/platform_thread_win.cc
+++ b/base/threading/platform_thread_win.cc
@@ -108,17 +108,19 @@ bool CreateThreadInternal(size_t stack_size,
   // have to work running on CreateThread() threads anyway, since we run code
   // on the Windows thread pool, etc.  For some background on the difference:
   //   http://www.microsoft.com/msj/1099/win32/win321099.aspx
+  PlatformThreadId thread_id;
   void* thread_handle = CreateThread(
-      NULL, stack_size, ThreadFunc, params, flags, NULL);
+      NULL, stack_size, ThreadFunc, params, flags, &thread_id);
   if (!thread_handle) {
     delete params;
     return false;
   }
 
-  if (out_thread_handle)
-    *out_thread_handle = PlatformThreadHandle(thread_handle);
-  else
+  if (out_thread_handle) {

[rvargas (doing something else), 2015/03/26 02:19:27]

nit: no need for {}

[kinuko, 2015/04/13 02:02:59]

Done.

+    *out_thread_handle = PlatformThreadHandle(thread_handle, thread_id);
+  } else {
     CloseHandle(thread_handle);
+  }
   return true;
 }