I'm planning on using the class `ExtensionView` for something else than `ExtensionPanel`s. Therefore this class should be defined in a separate file rather than `ExtensionPanel.js`.
Created attachment 153153 [details] Patch
Comment on attachment 153153 [details] Patch LGTM
Comment on attachment 153153 [details] Patch Clearing flags on attachment: 153153 Committed r123086: <http://trac.webkit.org/changeset/123086>
All reviewed patches have been landed. Closing bug.