Make //device pass "gn check"

Review URL: https://codereview.chromium.org/1484643002

Cr-Original-Commit-Position: refs/heads/master@{#363307}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: bda835b5af97a7fce770017890354c00ca50f557
diff --git a/generate_library_loader.gni b/generate_library_loader.gni
index 24f753b..c714c12 100644
--- a/generate_library_loader.gni
+++ b/generate_library_loader.gni
@@ -63,7 +63,7 @@
       output_cc,
       output_h,
     ]
-    deps = [
+    public_deps = [
       ":${target_name}_loader",
     ]
   }