Change notification cmd line enabling to use the new RuntimeEnabledFeatures code.

BUG=25318
TEST=none

Review URL: http://codereview.chromium.org/339093

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30660 0039d316-1c4b-4281-b951-d872f2087c98
static void AddHistogramSample(void* hist, int sample) {
  Histogram* histogram = static_cast<Histogram *>(hist);
  histogram->Add(sample);
}

static void AddHistogramSample(void* hist, int sample) {
  Histogram* histogram = static_cast<Histogram *>(hist);
  histogram->Add(sample);
}
