Merge from vscode a5cf1da01d5db3d2557132be8d30f89c38019f6c (#8525)

* Merge from vscode a5cf1da01d5db3d2557132be8d30f89c38019f6c

* remove files we don't want

* fix hygiene

* update distro

* update distro

* fix hygiene

* fix strict nulls

* distro

* distro

* fix tests

* fix tests

* add another edit

* fix viewlet icon

* fix azure dialog

* fix some padding

* fix more padding issues

src/vs/base/browser/ui/scrollbar/abstractScrollbar.ts

@@ -99,6 +99,7 @@ export abstract class AbstractScrollbar extends Widget {
 			this.slider.setHeight(height);
 		}
 		this.slider.setLayerHinting(true);
+		this.slider.setContain('strict');
 
 		this.domNode.domNode.appendChild(this.slider.domNode);
 

src/vs/base/browser/ui/scrollbar/scrollableElement.ts

@@ -64,7 +64,7 @@ export class MouseWheelClassifier {
 			return false;
 		}
 
-		// 0.5 * last + 0.25 * before last + 0.125 * before before last + ...
+		// 0.5 * last + 0.25 * 2nd last + 0.125 * 3rd last + ...
 		let remainingInfluence = 1;
 		let score = 0;
 		let iteration = 1;