message: Make single-arg constructor explicit
diff: @@ -23,7 +23,7 @@ namespace verible {
  namespace lsp {
  class FileEventDispatcher {
  public:
  - FileEventDispatcher(unsigned idle_ms = 50) : idle_ms_(idle_ms) {}
  + explicit FileEventDispatcher(unsigned idle_ms = 50) : idle_ms_(idle_ms) {}
  // Handlers for events from this multiplexer.
  // Returns true if we want to continue to be called in the future or false
  