Feature request: Add html anchors to line numbers in file view about gitiles HOT 3 CLOSED

When posting gitiles file-view URL's into bug reports, it would be very nice to be able
to link to an html anchor for the exact line I'm interested in.  Something like:

https://gerrit.googlesource.com/gitiles/+/master/gitiles-war/src/main/webapp/WEB-INF/web.xml#line20

Ideally, the html might look like this:

<li class="L9"><a name="line20"><a href="#line20"><span>...</span></a></a><br></li>

The <a href="#line20"> is just to make it easy to right-click and "Copy link address"

I don't want to fork prettify.js, and eventually I want to move to CodeMirror. But I
think in the meantime it wouldn't be hard to do this by postprocessing every <li> within
the <pre class="prettyprint">. Not sure what the performance impact would be (though
considering we may already show a flash of unstyled <pre> this may be ok).