Allow tink to be fetched and compile presence in bazel builds.

PiperOrigin-RevId: 485876571

WORKSPACE

@@ -59,6 +59,12 @@ http_archive(
     urls = ["https://github.com/google/glog/archive/v0.4.0.tar.gz"],
 )
 
+http_archive(
+    name = "com_google_tink",
+    strip_prefix = "tink-1.7.0/cc",
+    urls = ["https://github.com/google/tink/archive/v1.7.0.tar.gz"],
+)
+
 new_local_repository(
     name = "com_google_ukey2",
     path = "./third_party/ukey2/ukey2",

presence/implementation/encryption.cc

@@ -25,8 +25,8 @@
 #include <openssl/cipher.h>  // NOLINT
 #include <openssl/crypto.h>
 #include <openssl/evp.h>  // NOLINT
-#include "third_party/tink/cc/subtle/hkdf.h"
-#include "third_party/tink/cc/subtle/random.h"
+#include "tink/subtle/hkdf.h"
+#include "tink/subtle/random.h"
 
 namespace nearby {
 namespace presence {