Use vector of PermissionRequest instead of ContentSettingsTypes for GroupedPermissionInfoBarDelegate

Plumb in permission requests in grouped permission infobar delegate, instead of
just content setting types.

BUG=606138

Review-Url: https://codereview.chromium.org/2339863002
Cr-Commit-Position: refs/heads/master@{#425616}
6 files changed