Media Library: add track events for upload from URL feature

[fushar]

Part of https://github.com/Automattic/dotcom-forge/issues/10412

Proposed changes:

This PR adds a track event to track the usage of "upload from URL" feature in Media Library:

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

Does this pull request change what data or activity we track or use?

Testing instructions:

1. Go to wp-admin/upload.php?untangling-media=true
2. Click "Add New Media File"
3. Click "Upload from URL"
4. Enter a valid media URL
5. Click Upload button
6. Verify that the event is fired as above.
7. Go to Site Editor, try again, and verify that the event is fired with 'page': 'editor' props.

[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WordPress.com Simple site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin, and enable the media/tracks branch.

  • For jetpack-mu-wpcom changes, also add define( 'JETPACK_MU_WPCOM_LOAD_VIA_BETA_PLUGIN', true ); to your wp-config.php file.

• To test on Simple, run the following command on your sandbox:

  bin/jetpack-downloader test jetpack media/tracks
  

  bin/jetpack-downloader test jetpack-mu-wpcom-plugin media/tracks
  

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[github-actions]

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[github-actions]

Code Coverage Summary

This PR did not change code coverage!

That could be good or bad, depending on the situation. Everything covered before, and still is? Great! Nothing was covered before? Not so great. 🤷

Full summary · PHP report · JS report

[fushar]

@arthur791004 -- let me know if the track event changes I made for the external media makes sense 🤔

[arthur791004]

Looks like we need to support media-new.php as well. What do you think?

[fushar]

How so? The pluploader does not work there...

[arthur791004]

Ok. Let's address this when we want to add the button there

[fushar]

I think I remember now; I didn't implement there because the pluploader logic is a bit different there. It's the same reason why VideoPress is only available on upload.php but not media-new.php

[arthur791004]

Tested and works as expected.

Media Library	Editor