TEST-UNEXPECTED-FAIL | chrome://mochitests/content/browser/browser/devtools/inspector/test/browser_inspector_scrolling.js | inspected iframe scrolled - Got 25, expected 50

This should probably be fixed in WinMouseScrollHandler.cpp MouseScrollHandler::SynthesizeNativeMouseScrollEvent. aDelta should be doubled for HiDPI screens. Moving to Core::Widget

(In reply to Michael Ratcliffe [:miker] [:mratcliffe] from comment #1) > This should probably be fixed in WinMouseScrollHandler.cpp > MouseScrollHandler::SynthesizeNativeMouseScrollEvent. > > aDelta should be doubled for HiDPI screens. > > Moving to Core::Widget Actually, EventUtils.js::synthesizeWheel() seems like a more appropriate place to fix this. Very simple fix... Robcee is a testing peer so I think he can review this.

Comment on attachment 8372874 [details] [diff] [review] Scale deltas in EventUtils.js::synthesizeWheel() on HiDPI screens Review of attachment 8372874 [details] [diff] [review]: ----------------------------------------------------------------- nice

Try: https://tbpl.mozilla.org/?tree=Try&rev=d52b797fc3fe

Try: https://tbpl.mozilla.org/?tree=Try&rev=b9ee19d0e73f

Bounced https://hg.mozilla.org/integration/fx-team/rev/476e861951fd Seems like we are best only adjusting these values only for retina displays. At the moment they are also changed when the text is zoomed.

This is no longer an issue.