feat: BrowserWindow.getNormalBounds() (#13290)

* First commit

* Add Mac support (1st attempt)

* Add Mac support (2nd attempt)

* Simplify tests

* Restore window state !

* Looking at other tests, seems minimize, maximize, fullscreen are skipped when in CI

* Fix Mac tests

* Restore tests in CI

* Fix typo

* widget getRestoredBounds not working on Mac !!

* widget getRestoredBounds not working on Mac !!

* Add IsNormal function

* Add IsNormal

* IsNormal => isNormal

* Deactivate fullscreen on Mac. Do not receive leave-fullscreen event

* Set default original_frame_

* Set default original_frame_

* Fix Mac

atom/browser/native_window.h

@@ -87,6 +87,8 @@ class NativeWindow : public base::SupportsUserData,
   virtual gfx::Size GetContentSize();
   virtual void SetContentBounds(const gfx::Rect& bounds, bool animate = false);
   virtual gfx::Rect GetContentBounds();
+  virtual bool IsNormal();
+  virtual gfx::Rect GetNormalBounds() = 0;
   virtual void SetSizeConstraints(
       const extensions::SizeConstraints& size_constraints);
   virtual extensions::SizeConstraints GetSizeConstraints() const;