Add something like > mk_add_options 'export MOZ_BROWSER_XHTML=1' to enable loading the browser as xhtml.

Adds a new environment variable MOZ_BROWSER_XHTML to change Firefox to load a modified version of browser.xul as browser.xhtml. Adds the xhtml namespace to the script tags to make them work. MozReview-Commit-ID: 2adtOVzXHKd

Adds a new environment variable MOZ_BROWSER_XHTML to change Firefox to load a modified version of browser.xul as browser.xhtml. Adds the xhtml namespace to the script tags to make them work. MozReview-Commit-ID: 2adtOVzXHKd

I should note the browser loads with the above patch, but it is much better when bug 1479125 lands.

By the way, I've been doing try pushes for this with `./mach try -b do -p win64,linux64,macosx64 -u mochitests,xpcshell -t none --setenv MOZ_BROWSER_XHTML=1`. Obviously, there's a lot of orange still but since this is off by default that's fine. We should do a bug breakdown on problems once this lands.

Comment on attachment 8999016 [details] [diff] [review] Support switching to browser.xul to browser.xhtml. r= Review of attachment 8999016 [details] [diff] [review]: ----------------------------------------------------------------- Yes but please get a bug on file for why we have to have those namespaces on the script tags.

Pushed by bdahl@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/9aae17d0e090 Support switching to browser.xul to browser.xhtml. r=mossop

Backed out changeset 9aae17d0e090 (bug 1482256) for browser-chrome failures on browser/base/content/test/static/browser_all_files_referenced.js. CLOSED TREE Log: https://treeherder.mozilla.org/logviewer.html#?job_id=193769461&repo=mozilla-inbound&lineNumber=1381 TEST-UNEXPECTED-FAIL | browser/base/content/test/static/browser_all_files_referenced.js | there should be no unreferenced files - Got 1, expected 0 01:14:50 INFO - Stack trace: 01:14:50 INFO - chrome://mochikit/content/browser-test.js:test_is:1308 01:14:50 INFO - chrome://mochitests/content/browser/browser/base/content/test/static/browser_all_files_referenced.js:checkAllTheFiles:683 01:14:50 INFO - chrome://mochikit/content/browser-test.js:Tester_execTest/<:1106 01:14:50 INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1097 01:14:50 INFO - chrome://mochikit/content/browser-test.js:nextTest/<:999 01:14:50 INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<:795 01:14:50 INFO - Not taking screenshot here: see the one that was previously logged 01:14:50 INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/static/browser_all_files_referenced.js | unreferenced file: chrome://browser/content/browser.xhtml - Push with failures: https://treeherder.mozilla.org/#/jobs?repo=mozilla-inbound&revision=9aae17d0e0901fa1cccdf16b5f32d8212b2b84e2 Backout: https://hg.mozilla.org/integration/mozilla-inbound/rev/397dbf4d571f60282bed90ce11918adfae99b0d1

Pushed by bdahl@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/6639ad4e8e86 Support switching to browser.xul to browser.xhtml. r=mossop