Decouple the browsing data counters initialization and start.

chrome/browser/ui/webui/options/clear_browser_data_handler.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/options/clear_browser_data_handler.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 62 matching lines @@
   }
 }
 
 void ClearBrowserDataHandler::InitializePage() {
   UpdateInfoBannerVisibility();
   OnBrowsingHistoryPrefChanged();
   bool removal_in_progress = !!remover_;
   web_ui()->CallJavascriptFunction("ClearBrowserDataOverlay.setClearing",
                                    base::FundamentalValue(removal_in_progress));
 
+  for (BrowsingDataCounter* counter : counters_) {
+    DCHECK(AreCountersEnabled());
+    counter->Restart();
+  }
   web_ui()->CallJavascriptFunction(
       "ClearBrowserDataOverlay.markInitializationComplete");
 }
 
 void ClearBrowserDataHandler::UpdateInfoBannerVisibility() {
   base::string16 text;
 
   Profile* profile = Profile::FromWebUI(web_ui());
   auto availability = IncognitoModePrefs::GetAvailability(profile->GetPrefs());
   if (availability == IncognitoModePrefs::ENABLED) {
@@ skipping 185 matching lines @@
       ? l10n_util::GetPluralStringFUTF16(text_grd_id, count)
       : l10n_util::GetStringUTF16(IDS_CLEAR_BROWSING_DATA_CALCULATING);
 
   web_ui()->CallJavascriptFunction(
       "ClearBrowserDataOverlay.updateCounter",
       base::StringValue(pref_name),
       base::StringValue(text));
 }
 
 }  // namespace options