Change fidl tables from cpp to c.

This fixes a build error that resulted from FIDL changes that are in the SDK.

Change-Id: I87a7632aac843903229e2c081d1426a31c8f8552
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/267731
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
1 file changed