[Wconversion] Suppress warnings
Bug: 56258
Bug: 58162

Change-Id: I774d8ebf5b86890f669e7ed69aa4e8846fda6588
diff --git a/BUILD.gn b/BUILD.gn
index 64ffd77..bc6b7fa 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -11,5 +11,6 @@
     "src/farmhash.cc",
     "src/farmhash.h",
   ]
+  cflags = [ "-Wno-conversion" ]
   public_configs = [ ":farmhash_config" ]
 }