Prevent Google Mail Checker from scheduling more than one concurrent request.
In the case of failures (simulated by blackholing mail.google.com in /etc/hosts,
getInboxCount was calling onError in both the onreadystatechange and onerror
handlers). Prevent this in two ways: by only invoking the callback once and by
making scheduleRequest cancel any already-scheduled requests.
BUG=88514
TEST=no
R=mpcomplete@chromium.org
Review URL: http://codereview.chromium.org/7470036
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@94342 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed
