RFR: 8267551: Support loading images from inline data-URIs [v16]

[Kevin Rushforth]

On Sat, 5 Jun 2021 17:31:17 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> This PR adds support for loading images from [inline data URIs](https://en.wikipedia.org/wiki/Data_URI_scheme), which is also widely supported by web browsers. This enables developers to package small images in CSS files, rather than separately deploying the images alongside the CSS file.
>
> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
> 
>   added comment, simplified DataURI.matchScheme()

The docs look good. I left one minor comment inline.

You can update the CSR when ready. As I mentioned in a comment in the CSR, the `Specification` section should consist of the diffs to the API documentation. Make sure you note what API element (e.g., class doc, `Image(String url)` constructor, and so forth) each change is for, if it isn't clear from the diffs. You can omit the removal of the `</p>` html tags and the change from `example.` to `example:` from the diffs in the CSR.

modules/javafx.graphics/src/main/java/javafx/scene/image/Image.java line 95:

> 93:  * the protocol handlers that are registered for the application.
> 94:  *
> 95:  * <p>If a URL uses the "data" scheme, the data must be base64-encoded

I think these two sentences should be in the same paragraph.

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PR: https://git.openjdk.java.net/jfx/pull/508