[webkit-reviews] review requested: [Bug 28689] Replace disabled media mute button with port-specific implementation. : [Attachment 40027] Third attempt

[bugzilla-daemon at webkit.org]

Andrew Scherkus <scherkus at chromium.org> has asked  for review:
Bug 28689: Replace disabled media mute button with port-specific
implementation.
https://bugs.webkit.org/show_bug.cgi?id=28689

Attachment 40027: Third attempt
https://bugs.webkit.org/attachment.cgi?id=40027&action=review

------- Additional Comments from Andrew Scherkus <scherkus at chromium.org>
Being new to this part of WebKit I'm not quite sure how to access the
RenderTheme from inside an HTMLElement (and its subclasses). 
document()->page()->theme() was the best I could come up with (looks like what
RenderObject does)