View page source for local files

[romamatusevich]

The file uri scheme has been made allowed for view source

fix #8049

Original issue: #8049

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).

Test Plan:

• Open a local HTML file with "File" > "Open File"
• Right-click anywhere and select "View Page Source"
• Make sure the source is opened in another tab

[cndouglas]

Thanks @romamatusevich! Unfortunately, there are conflicts because of some recent commits. Could you please resolve them?

[romamatusevich]

Hello @Liunkae,

The conflicts were resolved.

[cndouglas]

Works great!

[cndouglas]

@romamatusevich Please squash the two commits. Thanks for adding tests, by the way!

[romamatusevich]

@Liunkae, rebased the changes to have one commit only.

[bsclifton]

Awesome!! 👍

Thanks for the patch @romamatusevich 😄 (and thanks @Liunkae for reviewing!)