Cert Provisioning: Remove unnecessary logging

Log a message about internet connection only when there are workers.
In other cases it shouldn't matter.

Bug: 1045895
Change-Id: I9ff4f03deabfb245017b14a13a834ba9148eda7b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2297499Reviewed-by: Pavol Marko <pmarko@chromium.org>
Commit-Queue: Michael Ershov <miersh@google.com>
Cr-Commit-Position: refs/heads/master@{#788587}

chrome/browser/chromeos/cert_provisioning/cert_provisioning_scheduler.cc

@@ -574,7 +574,10 @@ void CertProvisioningScheduler::WaitForInternetConnection() {
     return;
   }
 
-  VLOG(0) << "Waiting for internet connection";
+  if (!workers_.empty()) {
+    VLOG(0) << "Waiting for internet connection";
+  }
+
   is_waiting_for_online_ = true;
   for (auto& kv : workers_) {
     auto& worker_ptr = kv.second;