Allow task tracing in official chrome.

base/message_loop.cc

Index: base/message_loop.cc
diff --git a/base/message_loop.cc b/base/message_loop.cc
index aa04f45ff3d3c66b3f97932330d4588b59a33962..13b0bb610bf21681610e69bd4a85336bf9476663 100644
--- a/base/message_loop.cc
+++ b/base/message_loop.cc
@@ -432,9 +432,9 @@ bool MessageLoop::ProcessNextDelayedNonNestableTask() {
 }
 
 void MessageLoop::RunTask(const PendingTask& pending_task) {
-  UNSHIPPED_TRACE_EVENT2("task", "MessageLoop::RunTask",
-                         "src_file", pending_task.posted_from.file_name(),
-                         "src_func", pending_task.posted_from.function_name());
+  TRACE_EVENT2("task", "MessageLoop::RunTask",
+               "src_file", pending_task.posted_from.file_name(),
+               "src_func", pending_task.posted_from.function_name());
   DCHECK(nestable_tasks_allowed_);
   // Execute the task and assume the worst: It is probably not reentrant.
   nestable_tasks_allowed_ = false;