Bug 1052497 - [Browser] Update black load screen to white in browser while loading a page. r=benfrancis
Bug 1052497 - Implement pixel checking test with corked/uncorked HTTP server. r=benfrancis
Merge pull request #22951 from KevinGrandon/bug_1052497_browser_chrome_loading_color

Bug 1052497 - [Browser] Update black load screen to white in browser while loading a page