Make SkStrikeCache::Validate call non global version

Change Validate to ValidateGlyphCacheDataSize. Make it call a
non-global version.

BUG=skia:8091

Change-Id: Iec31a06569a0ab1ec318e693e699a808eb9ad247
Reviewed-on: https://skia-review.googlesource.com/136638
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
3 files changed