In file included from layout_object_methods.cpp:5:
./layout_object_methods.h:26:3: warning: [layout] LayoutObject's method 'ShouldFail1' in 'LayoutObject' must call CheckIsNotDestroyed() at the beginning.
  int ShouldFail1() {
  ^~~~~~~~~~~~~~~~~~~
./layout_object_methods.h:33:3: warning: [layout] LayoutObject's method 'EmptyMethod' in 'LayoutObject' must call CheckIsNotDestroyed() at the beginning.
  void EmptyMethod() {}
  ^~~~~~~~~~~~~~~~~~~~~
./layout_object_methods.h:42:3: warning: [layout] LayoutObject's method 'ShouldFail2' in 'LayoutBoxModelObject' must call CheckIsNotDestroyed() at the beginning.
  int ShouldFail2() const {
  ^~~~~~~~~~~~~~~~~~~~~~~~~
./layout_object_methods.h:48:3: warning: [layout] LayoutObject's method 'VirtualEmptyMethod' in 'LayoutBoxModelObject' must call CheckIsNotDestroyed() at the beginning.
  void VirtualEmptyMethod() override {}
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./layout_object_methods.h:57:3: warning: [layout] LayoutObject's method 'ShouldFail3' in 'LayoutBox' must call CheckIsNotDestroyed() at the beginning.
  int ShouldFail3() {
  ^~~~~~~~~~~~~~~~~~~
./layout_object_methods.h:63:3: warning: [layout] LayoutObject's method 'VirtualEmptyMethod' in 'LayoutBox' must call CheckIsNotDestroyed() at the beginning.
  void VirtualEmptyMethod() override {}
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
6 warnings generated.