Fix name of field trial flag in IsBoringSwitch().

Many moons ago, the flag was renamed to --force-fieldtrials.

BUG=none

Review URL: https://codereview.chromium.org/35613002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230332 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230332
Processing groups with nextPollSeconds === undefined.

In theory, the server can generate a group with requested == true, but nextPollSeconds === undefined.

This change makes the client correctly process this.

BUG=164227
TEST=No

Review URL: https://codereview.chromium.org/33433003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@230333 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 230333