Remove Element-specifc screen-sharing code out of the js-sdk

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

src/components/views/elements/DesktopCapturerSourcePicker.tsx

@@ -20,10 +20,23 @@ import BaseDialog from "..//dialogs/BaseDialog";
 import DialogButtons from "./DialogButtons";
 import classNames from 'classnames';
 import AccessibleButton from './AccessibleButton';
-import { getDesktopCapturerSources } from "matrix-js-sdk/src/webrtc/call";
 import { replaceableComponent } from "../../../utils/replaceableComponent";
 import TabbedView, { Tab, TabLocation } from '../../structures/TabbedView';
 
+export function getDesktopCapturerSources(): Promise<Array<DesktopCapturerSource>> {
+    const options: GetSourcesOptions = {
+        thumbnailSize: {
+            height: 176,
+            width: 312,
+        },
+        types: [
+            "screen",
+            "window",
+        ],
+    };
+    return window.electron.getDesktopCapturerSources(options);
+}
+
 export enum Tabs {
     Screens = "screen",
     Windows = "window",