Start PopularSites fetch from separate function.

chrome/browser/android/ntp/most_visited_sites_bridge.cc

Index: chrome/browser/android/ntp/most_visited_sites_bridge.cc
diff --git a/chrome/browser/android/ntp/most_visited_sites_bridge.cc b/chrome/browser/android/ntp/most_visited_sites_bridge.cc
index 1040bc1f7d7783bb3d66372d42f21dfd195ea628..75d03ff9410f3531e2682d06eac232d589cc41f2 100644
--- a/chrome/browser/android/ntp/most_visited_sites_bridge.cc
+++ b/chrome/browser/android/ntp/most_visited_sites_bridge.cc
@@ -157,14 +157,17 @@ void MostVisitedSitesBridge::JavaObserver::OnPopularURLsAvailable(
 
 MostVisitedSitesBridge::MostVisitedSitesBridge(Profile* profile)
     : supervisor_(profile),
+      popular_sites_(BrowserThread::GetBlockingPool(),
+                     profile->GetPrefs(),
+                     TemplateURLServiceFactory::GetForProfile(profile),
+                     g_browser_process->variations_service(),
+                     profile->GetRequestContext(),
+                     ChromePopularSites::GetDirectory()),
       most_visited_(BrowserThread::GetBlockingPool(),
                     profile->GetPrefs(),
-                    TemplateURLServiceFactory::GetForProfile(profile),
-                    g_browser_process->variations_service(),
-                    profile->GetRequestContext(),
-                    ChromePopularSites::GetDirectory(),
                     TopSitesFactory::GetForProfile(profile),
                     SuggestionsServiceFactory::GetForProfile(profile),
+                    &popular_sites_,
                     &supervisor_) {
   // Register the thumbnails debugging page.
   // TODO(sfiera): find thumbnails a home. They don't belong here.