New post-sideload UI:

chrome/browser/ui/global_error/global_error.cc

Index: chrome/browser/ui/global_error/global_error.cc
diff --git a/chrome/browser/ui/global_error/global_error.cc b/chrome/browser/ui/global_error/global_error.cc
index c1010a0bd3ffe1e70c745c780f97b9d6da15f878..b3545cdb6d93c614ab7edb8eb02972612d5e48e0 100644
--- a/chrome/browser/ui/global_error/global_error.cc
+++ b/chrome/browser/ui/global_error/global_error.cc
@@ -20,6 +20,17 @@ int GlobalError::GetBadgeResourceID() {
   return IDR_UPDATE_BADGE4;
 }
 
+GlobalError::Severity GlobalError::GetSeverity() {
+  switch (GetBadgeResourceID()) {
+    case IDR_UPDATE_BADGE: return SEVERITY_LOW;
+    case IDR_UPDATE_BADGE2: return SEVERITY_MEDIUM;
+    case IDR_UPDATE_BADGE3: return SEVERITY_HIGH;
+    case IDR_UPDATE_BADGE4: return SEVERITY_CRITICAL;
+    default: break;
+  }
+  return SEVERITY_LOW;
+}
+
 int GlobalError::MenuItemIconResourceID() {
   return IDR_UPDATE_MENU4;
 }