Bug 1476405: Part 2b - Use default thread size from nsIThreadManager in Linux PlatformThreads. r=jld

MozReview-Commit-ID: 4Mod1IdzJBw

--HG--
extra : rebase_source : 89d6559a27ea5681c1415f71eeb837bfadd8351d

ipc/chromium/src/base/platform_thread_posix.cc

@@ -124,8 +124,9 @@ bool CreateThread(size_t stack_size, bool joinable,
     pthread_attr_setdetachstate(&attributes, PTHREAD_CREATE_DETACHED);
   }
 
-  if (stack_size > 0)
-    pthread_attr_setstacksize(&attributes, stack_size);
+  if (stack_size == 0)
+    stack_size = nsIThreadManager::DEFAULT_STACK_SIZE;
+  pthread_attr_setstacksize(&attributes, stack_size);
 
   success = !pthread_create(thread_handle, &attributes, ThreadFunc, delegate);