Cherry-pick: cc: Do not skip TileManager::ManageTiles due to invalid viewport

Clean cherry-pick of crrev.com/r256122

Original description:

Tile ordering information is updated in
PictureLayerImpl::UpdateTilePriorities, which is already
skipped if viewport is not valid. So there is no point in
also skipping TileManager::ManageTiles, which currently
may make TileManager get stuck in smoothness mode forever.

BUG: 13227361

Change-Id: I6892a8fd9d0dfe6169ac26ef1133e622ec716106
1 file changed