Restart counters when the MD CBD dialog is reopened.

chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc

Index: chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc
diff --git a/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc b/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc
index a2e2b3ab706bcfdf3b66f3f0d243970f945de2df..b0cfede934007ab277ff334565c476ffc69086b9 100644
--- a/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc
+++ b/chrome/browser/ui/webui/settings/settings_clear_browsing_data_handler.cc
@@ -255,6 +255,10 @@ void ClearBrowsingDataHandler::HandleInitialize(const base::ListValue* args) {
   OnStateChanged();
   RefreshHistoryNotice();
 
+  // Restart the counters each time the dialog is reopened.
+  for (const auto& counter : counters_)
+    counter->Restart();
+
   ResolveJavascriptCallback(
       *callback_id,
       *base::Value::CreateNullValue() /* Promise<void> */);
@@ -310,7 +314,6 @@ void ClearBrowsingDataHandler::AddCounter(
   counter->Init(profile_->GetPrefs(),
                 base::Bind(&ClearBrowsingDataHandler::UpdateCounterText,
                            base::Unretained(this)));
-  counter->Restart();
   counters_.push_back(std::move(counter));
 }