Enables EVENTSOURCE in Chromium following this changeset in WebKit:
Enables EVENTSOURCE in Chromium following this changeset in WebKit:

http://trac.webkit.org/changeset/53931

TEST=Existing webkit layout tests must pass: LayoutTests/fast/eventsource and LayoutTests/http/tests/eventsource

Review URL: http://codereview.chromium.org/557037

git-svn-id: http://src.chromium.org/svn/trunk/src@45305 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 869b8f104eeb0e95b5975a9734df75a244345340
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser