Check that the parcel contained the expected amount of region data.

    android::Parcel* p = android::parcelForJavaObject(env, parcel);

    SkRegion* region = new SkRegion;

    size_t size = p->readInt32();

    size_t actualSize = region->readFromMemory(p->readInplace(size), size);

    const size_t size = p->readInt32();

    const void* regionData = p->readInplace(size);

    if (regionData == nullptr) {

        return 0;

    }

    SkRegion* region = new SkRegion;

    size_t actualSize = region->readFromMemory(regionData, size);

    if (size != actualSize) {

        delete region;

        return 0;