[GRC] Fix BUILD.gn for blink.

services/resource_coordinator/public/interfaces/BUILD.gn

Index: services/resource_coordinator/public/interfaces/BUILD.gn
diff --git a/services/resource_coordinator/public/interfaces/BUILD.gn b/services/resource_coordinator/public/interfaces/BUILD.gn
index d68debbc28408f6631d2ac012e0ba82cbd958eee..35c4ca578bf8868935f47f5a6c78e6e73a610b19 100644
--- a/services/resource_coordinator/public/interfaces/BUILD.gn
+++ b/services/resource_coordinator/public/interfaces/BUILD.gn
@@ -27,6 +27,13 @@ mojom("interfaces_internal") {
   export_header =
       "services/resource_coordinator/public/cpp/resource_coordinator_export.h"
 
+  export_class_attribute_blink =
+      "SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_EXPORT"
+  export_define_blink =
+      "SERVICES_RESOURCE_COORDINATOR_PUBLIC_CPP_IMPLEMENTATION=1"
+  export_header_blink =
+      "services/resource_coordinator/public/cpp/resource_coordinator_export.h"
+
   # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
   use_once_callback = false
 }