Sends metrics to Chrome even when user did not consent to send stats.

BUG=chromium-os:21660
TEST=observed that Platform.* stats appear in about:histograms also when consent is turned off.

Change-Id: Id70f0cca468ec39fdfe687d89a6f0748a2a07828
Reviewed-on: http://gerrit.chromium.org/gerrit/10147


Commit-Ready: Luigi Semenzato <semenzato@chromium.org>
Tested-by: Luigi Semenzato <semenzato@chromium.org>
Reviewed-by: Darin Petkov <petkov@chromium.org>