The download icon changes to a narrower arrow with the progressbar line beneath it in Photon.

Comment on attachment 8876349 [details] Bug 1371834 - Add arrow+bar download icon for MOZ_PHOTON_THEME. https://reviewboard.mozilla.org/r/147742/#review152470 r=me with the one issue below fixed ::: browser/themes/shared/menuPanel.svg:34 (Diff revision 1) > +#ifdef MOZ_PHOTON_THEME > + <path id="downloads" d="M248.7 26.1h-17.5c-1 0-1.8.8-1.8 1.8s.8 1.8 1.8 1.8h17.5c1 0 1.8-.8 1.8-1.8s-.8-1.8-1.8-1.8zm-10-2.2c.7.7 1.8.7 2.5 0l8.8-8.8c.7-.7.6-1.8-.1-2.5-.7-.6-1.7-.6-2.4 0l-5.8 5.8v-15c0-1-.8-1.8-1.8-1.8s-1.8.8-1.8 1.8v15l-5.8-5.8c-.7-.7-1.8-.6-2.5.1-.6.7-.6 1.7 0 2.4l8.9 8.8z"/> > +#else This shouldn't be necessary with Photon because the download button won't be customizable to the menu panel. To be explicit about this, you can use #ifndef MOZ_PHOTON_THEME ... old download icon ... #endif

Comment on attachment 8876349 [details] Bug 1371834 - Add arrow+bar download icon for MOZ_PHOTON_THEME. https://reviewboard.mozilla.org/r/147742/#review152470 > This shouldn't be necessary with Photon because the download button won't be customizable to the menu panel. > > To be explicit about this, you can use > #ifndef MOZ_PHOTON_THEME > ... old download icon ... > #endif On the other hand, we should probably leave this here and then when the patch is written to remove the ability to customize to the menu panel, that patch can remove both icon designs. So, I'll drop this.

Pushed by jwein@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/07b11447b58f Add arrow+bar download icon for MOZ_PHOTON_THEME. r=jaws

Screenshots: https://screenshots.mattn.ca/compare/?oldProject=mozilla-central&oldRev=5293e5f8935831e2e0d91ac9b69c1b473b3c0177&newProject=mozilla-central&newRev=c8f3df191e354062025352a45ac421e557ed324c Seems good. :)

I have reproduced this bug with Nightly 55.0a1 (2017-06-09) on Windows 8, 64-bit. The bug's fix is now verified on Latest Nightly 56.0a1 Build ID 20170615030208 User Agent Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0 [bugday-20170614]

Verifying per comment 7. My findings match Anika's.