ungoogled-software/ungoogled-chromium

Add Option to Disable “Sharing Tab to [site]” Banner in Tab Sharing

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#3374 opened on Jul 3, 2025

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enhancementhelp wanted

Description

Description

Add Option to Disable “Sharing Tab to [site]” Banner in Tab Sharing

Who's implementing?

  • I'm willing to implement this feature myself

The problem

When using getDisplayMedia or tabCapture APIs to capture a specific browser tab for advanced applications (e.g. transcription services), a persistent banner appears at the top of the shared tab that reads:

“Sharing this tab to [destination domain]”

This UI element is unremovable, overlayed, and disruptive to the user experience

Image

Image

Possible solutions

Introduce a permission or flag (either via API or command line) to:

Disable the banner via dev tools or manifest permission

Suppress the banner for trusted domains or localhost (dev environments)

Allow capture sessions with a banner: false flag (similar to how camera/mic UI is sometimes hidden in fullscreen apps with explicit user permission)

Alternatives

No response

Additional context

No response

Contributor guide

Tech stack
cppjavascripthtmlcss
Domain
frontend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
5
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Chromium codebase navigationC++ programmingChromium build systemungoogled chromium patching process
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
15
Research direction
Start by searching for the banner text (e.g., 'Sharing this tab to') in the Chromium source code, likely in chrome/browser/media/webrtc/ or similar. Identify where the UI component is rendered and how it can be conditionally hidden. Look at existing ungoogled chromium patches that modify UI behavior for examples. Consider adding a command line switch or a new entry in chrome://flags. The issue number is 3374; review any comments or linked PRs for additional context.