Topsites become keyedService based.

chrome/browser/thumbnails/thumbnail_service_impl.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/thumbnails/thumbnail_service_impl.h"
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/time/time.h"
 #include "chrome/browser/history/history_service.h"
+#include "chrome/browser/history/top_sites_service_factory.h"
 #include "chrome/browser/thumbnails/content_based_thumbnailing_algorithm.h"
 #include "chrome/browser/thumbnails/simple_thumbnail_crop.h"
 #include "chrome/browser/thumbnails/thumbnailing_context.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/search/search.h"
 #include "content/public/browser/browser_thread.h"
 #include "url/gurl.h"
 
 using content::BrowserThread;
 
@@ skipping 17 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   if (top_sites.get() != NULL)
     top_sites->AddForcedURL(url, base::Time::Now());
 }
 
 }  // namespace
 
 namespace thumbnails {
 
 ThumbnailServiceImpl::ThumbnailServiceImpl(Profile* profile)

[sdefresne, 2014/12/29 09:48:14]

You need to add the dependency on TopSitesServiceFactory to
ThumbnailServiceFactory.

[Jitu( very slow this week), 2014/12/30 10:09:03]

Done.

-    : top_sites_(profile->GetTopSites()),
+    : top_sites_(TopSitesServiceFactory::GetForProfile(profile).get()),
       use_thumbnail_retargeting_(IsThumbnailRetargetingEnabled()) {
 }
 
 ThumbnailServiceImpl::~ThumbnailServiceImpl() {
 }
 
 bool ThumbnailServiceImpl::SetPageThumbnail(const ThumbnailingContext& context,
                                             const gfx::Image& thumbnail) {
   scoped_refptr<history::TopSites> local_ptr(top_sites_);
   if (local_ptr.get() == NULL)
@@ skipping 59 matching lines @@
 }
 
 void ThumbnailServiceImpl::ShutdownOnUIThread() {
   // Since each call uses its own scoped_refptr, we can just clear the reference
   // here by assigning null. If another call is completed, it added its own
   // reference.
   top_sites_ = NULL;
 }
 
 }  // namespace thumbnails