Implement Qt EarlyWarningSystem and Chromium EarlyWarningSystem
Created attachment 44373 [details] Patch
Created attachment 44374 [details] Patch
Created attachment 44375 [details] Patch
style-queue ran check-webkit-style on attachment 44375 [details] without any errors.
Created attachment 44377 [details] Patch
Created attachment 44378 [details] Patch
Created attachment 44379 [details] Patch
Comment on attachment 44379 [details] Patch LGTM.
Committed r51747: <http://trac.webkit.org/changeset/51747>