GitLab

 - suppress a NULL deref in blink::FocusController::focusedOrMainFrame() (issue 470055)
 - extend the suppression for leaks from content::ServiceRegistryImpl::Bind (issue 455732)

BUG=470055,455732
TBR=thakis@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/1033573003

Cr-Commit-Position: refs/heads/master@{#321980}