Clear initial focus in Sync Confirmation dialog.

chrome/browser/ui/webui/signin/sync_confirmation_handler.cc

Index: chrome/browser/ui/webui/signin/sync_confirmation_handler.cc
diff --git a/chrome/browser/ui/webui/signin/sync_confirmation_handler.cc b/chrome/browser/ui/webui/signin/sync_confirmation_handler.cc
index 9cf12ca051312b3a44083a2ad79c7dc4684868d4..b3356871215acc22eff7145cb8231953339cd09d 100644
--- a/chrome/browser/ui/webui/signin/sync_confirmation_handler.cc
+++ b/chrome/browser/ui/webui/signin/sync_confirmation_handler.cc
@@ -121,4 +121,11 @@ void SyncConfirmationHandler::HandleInitializedWithSize(
 
   browser->signin_view_controller()->delegate()->ResizeNativeView(
       static_cast<int>(height));
+
+  // After the dialog is shown, some platforms might have an element focused.
+  // To be consistent, clear the focused element on all platforms.
+  // TODO(anthonyvd): Figure out why this is needed on Mac and not other
+  // platforms and if there's a way to start unfocused while avoiding this
+  // workaround.
+  web_ui()->CallJavascriptFunction("sync.confirmation.clearFocus");
 }