Nuke WebInspector.ProfileType.Events.ProgressUpdated

The event just added one more level of indirection which is not needed.

BUG=324769
R=alph@chromium.org

Review URL: https://codereview.chromium.org/104503003

git-svn-id: svn://svn.chromium.org/blink/trunk@163173 bbb929c8-8fbe-4397-9dbb-9b2b20218538