Start PopularSites fetch from separate function.

chrome/browser/ui/webui/popular_sites_internals_message_handler.cc

 // Copyright 2015 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/popular_sites_internals_message_handler.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ skipping 48 matching lines @@
     const base::ListValue* args) {
   DCHECK(args->empty());
 
   SendOverrides();
 
   Profile* profile = Profile::FromWebUI(web_ui());
   popular_sites_.reset(new PopularSites(
       content::BrowserThread::GetBlockingPool(), profile->GetPrefs(),
       TemplateURLServiceFactory::GetForProfile(profile),
       g_browser_process->variations_service(), profile->GetRequestContext(),
-      ChromePopularSites::GetDirectory(), false,
+      ChromePopularSites::GetDirectory()));
+  popular_sites_->StartFetch(
+      false,
       base::Bind(&PopularSitesInternalsMessageHandler::OnPopularSitesAvailable,
-                 base::Unretained(this), false)));
+                 base::Unretained(this), false));
 }
 
 void PopularSitesInternalsMessageHandler::HandleUpdate(
     const base::ListValue* args) {
   DCHECK_EQ(3u, args->GetSize());
   Profile* profile = Profile::FromWebUI(web_ui());
   auto callback =
       base::Bind(&PopularSitesInternalsMessageHandler::OnPopularSitesAvailable,
                  base::Unretained(this), true);
 
@@ skipping 18 matching lines @@
   args->GetString(2, &version);
   if (version.empty())
     prefs->ClearPref(ntp_tiles::prefs::kPopularSitesOverrideVersion);
   else
     prefs->SetString(ntp_tiles::prefs::kPopularSitesOverrideVersion, version);
 
   popular_sites_.reset(new PopularSites(
       content::BrowserThread::GetBlockingPool(), prefs,
       TemplateURLServiceFactory::GetForProfile(profile),
       g_browser_process->variations_service(), profile->GetRequestContext(),
-      ChromePopularSites::GetDirectory(), true, callback));
+      ChromePopularSites::GetDirectory()));
+  popular_sites_->StartFetch(true, callback);
 }
 
 void PopularSitesInternalsMessageHandler::HandleViewJson(
     const base::ListValue* args) {
   DCHECK_EQ(0u, args->GetSize());
 
   const base::FilePath& path = popular_sites_->local_path();
   base::PostTaskAndReplyWithResult(
       content::BrowserThread::GetBlockingPool()
           ->GetTaskRunnerWithShutdownBehavior(
@@ skipping 43 matching lines @@
   web_ui()->CallJavascriptFunctionUnsafe(
       "chrome.popular_sites_internals.receiveJson", base::StringValue(json));
 }
 
 void PopularSitesInternalsMessageHandler::OnPopularSitesAvailable(
     bool explicit_request, bool success) {
   if (explicit_request)
     SendDownloadResult(success);
   SendSites();
 }