Add support for autofill server experiments

BUG=none
TEST=unit_tests --gtest_filter=AutoFillMetricsTest.QualityMetricsWithExperimentId:AutoFillQueryXmlParserTest.ParseExperimentId

Review URL: http://codereview.chromium.org/6260027

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@73216 0039d316-1c4b-4281-b951-d872f2087c98
void AutoFillManager::DidNavigateMainFramePostCommit(
    const NavigationController::LoadCommittedDetails& details,
    const ViewHostMsg_FrameNavigate_Params& params) {
  Reset();
}

void AutoFillManager::DidNavigateMainFramePostCommit(
    const NavigationController::LoadCommittedDetails& details,
    const ViewHostMsg_FrameNavigate_Params& params) {
  Reset();
}
