browser.jar:
% content branding %content/branding/ xpcnativewrappers=yes
  content/branding/about.png                     (about.png)
  content/branding/aboutCredits.png              (aboutCredits.png)
  content/branding/aboutFooter.png               (../../../browser/branding/unofficial/content/aboutFooter.png)
  content/branding/icon48.png                    (icon48.png)
  content/branding/icon64.png                    (icon64.png)
