The following code is wrong. I made a mistake during porting the [ComputeNativeWindowOcclusionStatus()](https://source.chromium.org/chromium/chromium/src/+/main:ui/aura/native_window_occlusion_tracker_win.cc;l=577) from chromium to gecko. https://searchfox.org/mozilla-central/rev/88cd13997fb0747cdcd78638fc762ff2d75e1fc5/widget/windows/WinWindowOcclusionTracker.cpp#920
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The following code is wrong. I made a mistake during porting the [ComputeNativeWindowOcclusionStatus()](https://source.chromium.org/chromium/chromium/src/+/main:ui/aura/native_window_occlusion_tracker_win.cc;l=577) from chromium to gecko. https://searchfox.org/mozilla-central/rev/88cd13997fb0747cdcd78638fc762ff2d75e1fc5/widget/windows/WinWindowOcclusionTracker.cpp#920 chromium uses (left, top right, bottom), but gecko needs to use (x, y, width, height).