Call CanCaptureVisiblePage in page capture API.

Currently the pageCapture permission allows access
to arbitrary local files and chrome:// pages which
can be a security concern. In order to address this,
the page capture API needs to be changed similar to
the captureVisibleTab API. The API will now only allow
extensions to capture otherwise-restricted URLs if the
user has granted activeTab. In addition, file:// URLs are
only capturable with the "Allow on file URLs" option enabled.

Bug: 893087

Change-Id: I6d6225a3efb70fc033e2e1c031c633869afac624
Reviewed-on: https://chromium-review.googlesource.com/c/1330689
Commit-Queue: Bettina Dea <bdea@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615248}
PermissionMessages PermissionsData::GetNewPermissionMessages(
    const PermissionSet& granted_permissions) const {
  base::AutoLock auto_lock(runtime_lock_);

  std::unique_ptr<const PermissionSet> new_permissions =
      PermissionSet::CreateDifference(*active_permissions_unsafe_,
                                      granted_permissions);

  return PermissionMessageProvider::Get()->GetPermissionMessages(
      PermissionMessageProvider::Get()->GetAllPermissionIDs(*new_permissions,
                                                            manifest_type_));
}

PermissionMessages PermissionsData::GetNewPermissionMessages(
    const PermissionSet& granted_permissions) const {
  base::AutoLock auto_lock(runtime_lock_);

  std::unique_ptr<const PermissionSet> new_permissions =
      PermissionSet::CreateDifference(*active_permissions_unsafe_,
                                      granted_permissions);

  return PermissionMessageProvider::Get()->GetPermissionMessages(
      PermissionMessageProvider::Get()->GetAllPermissionIDs(*new_permissions,
                                                            manifest_type_));
}
