See https://people-mozilla.org/~shorlander/projects/photon/Mockups/windows-10.html

Comment on attachment 8872935 [details] Bug 1355764 - Replace window drag space above tabs with space at the start of the tab strip. https://reviewboard.mozilla.org/r/144478/#review148362 Looks mostly good, one small issue: This variable on OSX is still based on the previous spacing: https://searchfox.org/mozilla-central/source/browser/themes/osx/browser.css#9 That makes the buttonbox on OSX look a bit off. Weirdly, it's only used once in the tree: https://searchfox.org/mozilla-central/search?q=windowButtonMarginTop&path= So I'd suggest removing it and setting the margin-top to 6px, same as compact theme: https://searchfox.org/mozilla-central/source/browser/themes/osx/compacttheme.css#32

Comment on attachment 8872935 [details] Bug 1355764 - Replace window drag space above tabs with space at the start of the tab strip. https://reviewboard.mozilla.org/r/144478/#review148374 Thanks!

Pushed by dgottwald@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/6a894530a99b Replace window drag space above tabs with space at the start of the tab strip. r=johannh

Backed out for causing Win7 browser_roundedWindow_newWindow.js failures. https://hg.mozilla.org/integration/autoland/rev/7fb3d9dfa8e684d5258a3d96b7176a1fa95fe205 https://treeherder.mozilla.org/logviewer.html#?job_id=103502703&repo=autoland

(In reply to Ryan VanderMeulen [:RyanVM] from comment #8) > Backed out for causing Win7 browser_roundedWindow_newWindow.js failures. > https://hg.mozilla.org/integration/autoland/rev/ > 7fb3d9dfa8e684d5258a3d96b7176a1fa95fe205 > > https://treeherder.mozilla.org/logviewer.html#?job_id=103502703&repo=autoland This appears to be a bug in calcMaximumAvailSize: http://searchfox.org/mozilla-central/rev/1a0d9545b9805f50a70de703a3c04fc0d22e3839/browser/components/resistfingerprinting/test/browser/head.js#10 It calculates the chrome dimensions in a maximized window, and then tests use them to measure non-maximized windows.

Pushed by dgottwald@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/215cfdee973f Replace window drag space above tabs with space at the start of the tab strip. r=johannh

Screenshots: https://screenshots.mattn.ca/compare/?oldProject=mozilla-central&oldRev=edffa38ec0c515198f360f23d286290cb5081996&newProject=mozilla-central&newRev=cac2fd43de81d44b36396704220996b0c4a39f1a Unfortunately a bit incomplete and full of other changes, but you can see the drag space on Windows 7 and lack of drag space on Linux (which is intended I think).

Any option to disable this? Maximized window looks goofy now :-/

(In reply to Geobert Quach from comment #16) > Any option to disable this? Maximized window looks goofy now :-/ That's bug 1369786.

Verified as fixed on latest Nightly 55.0a1 build ID 20170609030207, on Windows 10 x64 and Mac 10.12. For Ubuntu, as I see in the mockups (https://people-mozilla.org/~shorlander/projects/photon/Mockups/linux.html) there is no space for dragging the window. I verified on Ubuntu 16.04 and I could not observe any space at the start of the tabs strip for window dragging(please see attachment).Is this intentional for Ubuntu OS-es?

Yes, this is expected.

Based on comments 18 and 19, mark bug verified-fixed.