Implement debugging local unlock keys in chrome://proximity-auth.

components/proximity_auth.gypi

Index: components/proximity_auth.gypi
diff --git a/components/proximity_auth.gypi b/components/proximity_auth.gypi
index 0cb415036a4d5fb08317481285199bdee4f6f208..11f33f368e41acdebf574a258d40556eec8bebc5 100644
--- a/components/proximity_auth.gypi
+++ b/components/proximity_auth.gypi
@@ -14,6 +14,7 @@
       ],
       'dependencies': [
         ':cryptauth',
+        ':cryptauth_proto',
         ':proximity_auth_logging',
         '../base/base.gyp:base',
         '../base/base.gyp:base_prefs',
@@ -85,6 +86,10 @@
         "proximity_auth/wire_message.cc",
         "proximity_auth/wire_message.h",
       ],
+
+      'export_dependent_settings': [
+        'cryptauth_proto',
+      ],
     },
     {
       'target_name': 'proximity_auth_test_support',
@@ -217,6 +222,7 @@
         '../ui/resources/ui_resources.gyp:ui_resources',
         'components_resources.gyp:components_resources',
         'cryptauth',
+        'cryptauth_proto',
         'proximity_auth',
       ],
       'include_dirs': [