Icon for closing share tray

[vini-gupta]

Feature Request

We need icon for closing share tray

Problem description

We need 3 icons for share tray

1. open share-tray: we have one icon named 'call-control-present-new' for this.
2. close share-tray: this is missing
3. stop presenting: we have one icon named 'call-control-stop-presenting-new' for this

[vini-gupta]

@musingh1 @alinais

[vini-gupta]

@alinais we need this icon when the share tray is open.

[hughreeling]

#585

[vini-gupta]

#1278