src/vs/editor/browser/viewParts/overviewRuler/decorationsOverviewRuler.ts/DecorationsOverviewRuler/_updateSettings
class DecorationsOverviewRuler:	private _updateSettings(renderNow: boolean): boolean {
		const newSettings = new Settings(this._context.configuration, this._context.theme);
		if (this._settings && this._settings.equals(newSettings)) {
			// nothing to do
			return false;
		}

		this._settings = newSettings;

		this._domNode.setTop(this._settings.top);
		this._domNode.setRight(this._settings.right);
		this._domNode.setWidth(this._settings.domWidth);
		this._domNode.setHeight(this._settings.domHeight);
		this._domNode.domNode.width = this._settings.canvasWidth;
		this._domNode.domNode.height = this._settings.canvasHeight;

		if (renderNow) {
			this._render();
		}

		return true;
	}