Topsites become keyedService based.

chrome/browser/thumbnails/thumbnail_service_impl.cc

Index: chrome/browser/thumbnails/thumbnail_service_impl.cc
diff --git a/chrome/browser/thumbnails/thumbnail_service_impl.cc b/chrome/browser/thumbnails/thumbnail_service_impl.cc
index 8f572d39b14994962831bcaef78b10eaf32e672e..d717d3590542820c90da661a2a603700f0b30cdf 100644
--- a/chrome/browser/thumbnails/thumbnail_service_impl.cc
+++ b/chrome/browser/thumbnails/thumbnail_service_impl.cc
@@ -8,6 +8,7 @@
 #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"
@@ -46,7 +47,7 @@ void AddForcedURLOnUIThread(scoped_refptr<history::TopSites> top_sites,
 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()) {
 }