Fix regression in BrowserThread's optimization of when it skips a lock. The variable name was misna…

content/browser/browser_thread_impl.cc

Index: content/browser/browser_thread_impl.cc
===================================================================
--- content/browser/browser_thread_impl.cc	(revision 153862)
+++ content/browser/browser_thread_impl.cc	(working copy)
@@ -238,12 +238,12 @@
   // which would require a lock because std::map isn't thread safe, defeating
   // the whole purpose of this optimization.
   BrowserThread::ID current_thread;
-  bool guaranteed_to_outlive_target_thread =
+  bool target_thread_outlives_current =
       GetCurrentThreadIdentifier(&current_thread) &&
-      current_thread <= identifier;
+      current_thread >= identifier;
 
   BrowserThreadGlobals& globals = g_globals.Get();
-  if (!guaranteed_to_outlive_target_thread)
+  if (!target_thread_outlives_current)
     globals.lock.Acquire();
 
   MessageLoop* message_loop = globals.threads[identifier] ?
@@ -256,7 +256,7 @@
     }
   }
 
-  if (!guaranteed_to_outlive_target_thread)
+  if (!target_thread_outlives_current)
     globals.lock.Release();
 
   return !!message_loop;