Merge changes from Skia's m37 branch into lmp-dev.
Derek Sollenberger authored
    This merge includes the following CLs...
    0d78ac2  Set maximum output size for scaled-image-cache images
    0c1c911  Adding 64 bit checks
    f2d87ba  Get additional DW font metrics when available.

Bug: 17024392
Change-Id: I7956f50e5b95b1e012cf56614b12f1d834b423c1
4e4a89da