RefCountedLeakDetector: Remove unused methods for suppressing leaks

BUG=372309

Review URL: https://codereview.chromium.org/1354443003

git-svn-id: svn://svn.chromium.org/blink/trunk@202407 bbb929c8-8fbe-4397-9dbb-9b2b20218538
2 files changed
tree: 28116474a90db8590eef7e812248699c5c1c8e3c
  1. third_party/