Reproduced with Nightly 44.0a1 2015-10-04 under Win 7 64-bit and Mac OS X 10.9.5 Steps to reproduce: 1. Select the search bar magnifying glass to open the search panel 2. Right click on a one-click search engine 3. Select "Set As Default Search Engine" from the Contextual Menu Expected results: The default search engine is modified, the panel is updated Actual results: Regression, the search engine is not set as default. The following error is shown in browser console: TypeError: PlacesUtils.getImageURLForResolution is not a function onxblcommand() search.xml:1448:19 Regression-range: Last good revision: 096c0f407f8ba3ef7cfe4e0b831761993cac38b1 (2015-10-01) First bad revision: 5f16c6c2b969f70e8da10ee34853246d593af412 (2015-10-02) Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=096c0f407f8ba3ef7c fe4e0b831761993cac38b1&tochange=5f16c6c2b969f70e8da10ee34853246d593af412 Inbound shows bug 1118926 as culprit (ran mozregression twice as it doesn't seem related, but I'm adding it so it can be reviewed): Last good revision: d7ba52bbc272d5207768e2c9adef6ed863d5bfa1 First bad revision: f82ed42b855dfd2e87508134fbc84d9bc22ebce5 Pushlog: https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=d7ba52 bbc272d5207768e2c9adef6ed863d5bfa1&tochange=f82ed42b855dfd2e87508134fbc84d9bc22e bce5

I don't understand what the point of this field is, because the one caller doesn't use 'this.' to use it, and I couldn't find callers outside the file, so I removed it. If I missed something, please let me know.

Comment on attachment 8669688 [details] [diff] [review] remove usage of getImageURLForResolution from search component, (In reply to :Gijs Kruitbosch from comment #1) > I don't understand what the point of this field is, because the one caller > doesn't use 'this.' to use it I think it's an XBL quirk that makes 'this.' implicit in code inside <handler> tags. I've never seen this documented, but observed this behavior a few times.

Confirming this fix on Firefox 44.0b4, build ID: 20151228134903. Verified on Windows 7 64bit, Windows 8.1 64bit, Mac OS X 10.9.5 and Ubuntu 12.04 x86.