Add Tink as dependency.

To be used for encrypting dependency info for APK.

Bug: 147654754
Test: N/A
Change-Id: I29e9857a64b78a7e5018c7f2dd5711327a749648
diff --git a/base/dependencies.properties b/base/dependencies.properties
index 688215e..4484537 100644
--- a/base/dependencies.properties
+++ b/base/dependencies.properties
@@ -96,3 +96,4 @@
 checker_compat_qual = org.checkerframework:checker-compat-qual:2.5.5
 checker_qual = org.checkerframework:checker-qual:2.8.1
 compile_testing = com.google.testing.compile:compile-testing:0.16
+tink = com.google.crypto.tink:tink:1.3.0-rc2
\ No newline at end of file