Revert of [tracing] Adding task information to heap profiler

base/debug/task_annotator.h

Index: base/debug/task_annotator.h
diff --git a/base/debug/task_annotator.h b/base/debug/task_annotator.h
index 2687c5c930ef0fbdfaf6d9c59bb1ffdd3af58d09..443c71bf30169ded3042c90d07343710b4cdab42 100644
--- a/base/debug/task_annotator.h
+++ b/base/debug/task_annotator.h
@@ -39,6 +39,11 @@
   DISALLOW_COPY_AND_ASSIGN(TaskAnnotator);
 };
 
+#define TRACE_TASK_EXECUTION(run_function, task)           \
+  TRACE_EVENT2("toplevel", (run_function), "src_file",     \
+               (task).posted_from.file_name(), "src_func", \
+               (task).posted_from.function_name());
+
 }  // namespace debug
 }  // namespace base