AXObject::performDefaultAction() should focus if it can't click

third_party/WebKit/Source/modules/accessibility/AXSpinButton.h

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 52 matching lines @@
 class AXSpinButtonPart final : public AXMockObject {
  public:
   static AXSpinButtonPart* create(AXObjectCacheImpl&);
   ~AXSpinButtonPart() override {}
   void setIsIncrementor(bool value) { m_isIncrementor = value; }
 
  private:
   explicit AXSpinButtonPart(AXObjectCacheImpl&);
   bool m_isIncrementor : 1;
 
-  bool press() const override;
+  bool press() override;
   AccessibilityRole roleValue() const override { return ButtonRole; }
   bool isSpinButtonPart() const override { return true; }
   void getRelativeBounds(AXObject** outContainer,
                          FloatRect& outBoundsInContainer,
                          SkMatrix44& outContainerTransform) const override;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXSpinButton, isNativeSpinButton());
 DEFINE_AX_OBJECT_TYPE_CASTS(AXSpinButtonPart, isSpinButtonPart());
 
 }  // namespace blink
 
 #endif  // AXSpinButton_h