[Merge M56] arc: Restore UMA statistics for failures in LSO flow.

chrome/browser/chromeos/arc/arc_auth_service.cc

Index: chrome/browser/chromeos/arc/arc_auth_service.cc
diff --git a/chrome/browser/chromeos/arc/arc_auth_service.cc b/chrome/browser/chromeos/arc/arc_auth_service.cc
index fae06a64a0ff0aa8750d41ee1a977b73c8faf138..dd19db7480c27fefb31cfb233d7512ce2bf2a567 100644
--- a/chrome/browser/chromeos/arc/arc_auth_service.cc
+++ b/chrome/browser/chromeos/arc/arc_auth_service.cc
@@ -454,6 +454,7 @@ void ArcAuthService::OnContextPrepared(
   if (request_context_getter) {
     support_host_->ShowLso();
   } else {
+    UpdateOptInCancelUMA(OptInCancelReason::NETWORK_ERROR);
     support_host_->ShowError(ArcSupportHost::Error::SIGN_IN_NETWORK_ERROR,
                              false);
   }
@@ -1111,6 +1112,12 @@ void ArcAuthService::OnAuthSucceeded(const std::string& auth_code) {
   OnAuthCodeObtained(auth_code);
 }
 
+void ArcAuthService::OnAuthFailed() {
+  // Don't report via callback. Extension is already showing more detailed
+  // information. Update only UMA here.
+  UpdateOptInCancelUMA(OptInCancelReason::NETWORK_ERROR);
+}
+
 void ArcAuthService::OnRetryClicked() {
   DCHECK(support_host_);