Add branch and manifest info to soong_metrics.

Bug: 259303480
Test: N/A
Change-Id: I434e24250ff640fddfca93ecb91fdfa49710e2f2
diff --git a/ui/metrics/metrics_proto/metrics.proto b/ui/metrics/metrics_proto/metrics.proto
index 5ad13fc..b7dc91a 100644
--- a/ui/metrics/metrics_proto/metrics.proto
+++ b/ui/metrics/metrics_proto/metrics.proto
@@ -121,6 +121,13 @@
   // The error message due to a non-zero exit _only_ if it did not occur in a
   // recorded phase of the build.
   optional string error_message = 30;
+
+  // The Git Manifest for the user's branch.
+  optional string manifest_url = 31;
+
+  // The branch on which the build occurred.
+  // Example: refs/heads/master
+  optional string branch = 32;
 }
 
 message BuildConfig {