Fix cpplint whitespace/blank_line issues

Change-Id: Ice937e95e23dd622c17054551d4ae4cebd0ef8a2
diff --git a/runtime/trace.h b/runtime/trace.h
index 5bd6a8d..bd9c140 100644
--- a/runtime/trace.h
+++ b/runtime/trace.h
@@ -78,6 +78,7 @@
                                mirror::AbstractMethod* catch_method, uint32_t catch_dex_pc,
                                mirror::Throwable* exception_object)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+
  private:
   explicit Trace(File* trace_file, int buffer_size, int flags);