Bugzilla

I would think this has always been happening, so I'm not sure if we should prevent it or we already somehow filter these out from our analysis. I happened to print this out this data ping data when testing something else when closing the window:

```
{
	addon_version: "20190501155723",
	locale: "en-US",
	user_prefs: 255,
	session_id: "{7367e412-c7cd-6741-a0b9-907ffc332542}",
	page: "about:newtab",
	session_duration: (void 0),
	action: "activity_stream_session",
	perf: {
		load_trigger_type: "unexpected",
		is_preloaded: true,
		is_prerendered: false,
		topsites_icon_stats: {
			custom_screenshot: 0,
			screenshot_with_icon: 0,
			screenshot: 0,
			tippytop: 6,
			rich_icon: 0,
			no_image: 0
		},
		topsites_pinned: 0,
		topsites_search_shortcuts: 1,
		topsites_first_painted_ts: 1556822523493
	}
}
```

I would think this has always been happening, so I'm not sure if we should prevent it or we already somehow filter these out from our analysis. I happened to print this out this data ping data when testing something else when closing the window:

```json
{
	addon_version: "20190501155723",
	locale: "en-US",
	user_prefs: 255,
	session_id: "{7367e412-c7cd-6741-a0b9-907ffc332542}",
	page: "about:newtab",
	session_duration: (void 0),
	action: "activity_stream_session",
	perf: {
		load_trigger_type: "unexpected",
		is_preloaded: true,
		is_prerendered: false,
		topsites_icon_stats: {
			custom_screenshot: 0,
			screenshot_with_icon: 0,
			screenshot: 0,
			tippytop: 6,
			rich_icon: 0,
			no_image: 0
		},
		topsites_pinned: 0,
		topsites_search_shortcuts: 1,
		topsites_first_painted_ts: 1556822523493
	}
}
```