In file included from missing_ctor.cpp:5:
./missing_ctor.h:25:1: warning: [chromium-style] Complex class/struct needs an explicit out-of-line constructor.
class MissingCtorsArentOKInHeader {
^
./missing_ctor.h:25:1: warning: [chromium-style] Complex class/struct needs an explicit out-of-line destructor.
./missing_ctor.h:51:3: warning: [chromium-style] Complex constructor has an inlined body.
  ExplicitlyDefaultedInlineAlsoWarns() = default;
  ^
./missing_ctor.h:53:3: warning: [chromium-style] Complex constructor has an inlined body.
  ExplicitlyDefaultedInlineAlsoWarns(
  ^
./missing_ctor.h:52:3: warning: [chromium-style] Complex destructor has an inline body.
  ~ExplicitlyDefaultedInlineAlsoWarns() = default;
  ^
5 warnings generated.