Worker should not use deprecated {,un}setPendingActivity
Worker should not use deprecated {,un}setPendingActivity

BUG=354845

Review URL: https://codereview.chromium.org/385923003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@177914 bbb929c8-8fbe-4397-9dbb-9b2b20218538

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk