Bug 1543902 - Skip browser_aboutdebugging_devtoolstoolbox_reload on ccov platforms r=daisuke

The test finishes correctly but it's too slow for those platforms.

There is no real added value in running this test for code coverage, because it just load tools several times.
We are not exercising a specific feature of any tool, we are rather checking for race conditions when reloading.
Skipping on code coverage should not have any impact on the actual code coverage for devtools.

Differential Revision: https://phabricator.services.mozilla.com/D28614

--HG--
extra : moz-landing-system : lando

devtools/client/aboutdebugging-new/test/browser/browser.ini

@@ -62,7 +62,7 @@ skip-if = (os == 'linux' && bits == 32) # ADB start() fails on linux 32, see Bug
 [browser_aboutdebugging_devtoolstoolbox_performance.js]
 skip-if = os == 'linux' && e10s && (asan || debug) # Same skip-if as old perf panel test suite. Bug 1254821
 [browser_aboutdebugging_devtoolstoolbox_reload.js]
-skip-if = verify # test loads the toolbox 2 times for each panel, might timeout or OOM
+skip-if = verify || ccov # test loads the toolbox 2 times for each panel, might timeout or OOM
 [browser_aboutdebugging_devtoolstoolbox_shortcuts.js]
 skip-if = (os == "win" && ccov) # Bug 1521349
 [browser_aboutdebugging_devtoolstoolbox_target_destroyed.js]