Supress warnings about implicit fallthrough in Android.

Change-Id: I3e55c2641b53f284f16658370a18d165b678cc36
Reviewed-on: https://skia-review.googlesource.com/153667
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Chih-hung Hsieh <chh@google.com>
Commit-Queue: Derek Sollenberger <djsollen@google.com>
Auto-Submit: Derek Sollenberger <djsollen@google.com>
2 files changed