Report failures on snapshot taking

Summary: Suggested in D21571294.

Reviewed By: jknoxville

Differential Revision: D21594146

fbshipit-source-id: 1dcc310343788aecced724282d74e0cf08688220

desktop/app/src/chrome/ScreenCaptureButtons.tsx

@@ -73,7 +73,9 @@ class ScreenCaptureButtons extends Component<Props, State> {
   captureScreenshot: Promise<void> | any = async () => {
     const {selectedDevice} = this.props;
     if (selectedDevice != null) {
-      await capture(selectedDevice).then(openFile);
+      await capture(selectedDevice)
+        .then(openFile)
+        .catch((e) => console.error('Taking screenshot failed:', e));
     }
   };