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_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;
 
 namespace {
 
 // The thumbnail size in DIP.
 const int kThumbnailWidth = 212;
 const int kThumbnailHeight = 142;
 
 // True if thumbnail retargeting feature is enabled (Finch/flags).
 bool IsThumbnailRetargetingEnabled() {
   if (!chrome::IsInstantExtendedAPIEnabled())
     return false;
 
   return base::CommandLine::ForCurrentProcess()->HasSwitch(
       switches::kEnableThumbnailRetargeting);
 }
 
 void AddForcedURLOnUIThread(scoped_refptr<history::TopSites> top_sites,
                             const GURL& url) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
-  if (top_sites.get() != NULL)
+  if (top_sites)
     top_sites->AddForcedURL(url, base::Time::Now());
 }
 
 }  // namespace
 
 namespace thumbnails {
 
 ThumbnailServiceImpl::ThumbnailServiceImpl(Profile* profile)
-    : top_sites_(profile->GetTopSites()),
+    : top_sites_(TopSitesFactory::GetForProfile(profile)),
       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)
+  if (!local_ptr)
     return false;
 
   return local_ptr->SetPageThumbnail(context.url, thumbnail, context.score);
 }
 
 bool ThumbnailServiceImpl::GetPageThumbnail(
     const GURL& url,
     bool prefix_match,
     scoped_refptr<base::RefCountedMemory>* bytes) {
   scoped_refptr<history::TopSites> local_ptr(top_sites_);
-  if (local_ptr.get() == NULL)
+  if (!local_ptr)
     return false;
 
   return local_ptr->GetPageThumbnail(url, prefix_match, bytes);
 }
 
 void ThumbnailServiceImpl::AddForcedURL(const GURL& url) {
   scoped_refptr<history::TopSites> local_ptr(top_sites_);
-  if (local_ptr.get() == NULL)
+  if (!local_ptr)
     return;
 
   // Adding
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                           base::Bind(AddForcedURLOnUIThread, local_ptr, url));
 }
 
 ThumbnailingAlgorithm* ThumbnailServiceImpl::GetThumbnailingAlgorithm()
     const {
   const gfx::Size thumbnail_size(kThumbnailWidth, kThumbnailHeight);
   if (use_thumbnail_retargeting_)
     return new ContentBasedThumbnailingAlgorithm(thumbnail_size);
   return new SimpleThumbnailCrop(thumbnail_size);
 }
 
 bool ThumbnailServiceImpl::ShouldAcquirePageThumbnail(const GURL& url) {
   scoped_refptr<history::TopSites> local_ptr(top_sites_);
 
-  if (local_ptr.get() == NULL)
+  if (!local_ptr)
     return false;
 
   // Skip if the given URL is not appropriate for history.
   if (!HistoryService::CanAddURL(url))
     return false;
   // Skip if the top sites list is full, and the URL is not known.
   if (local_ptr->IsNonForcedFull() && !local_ptr->IsKnownURL(url))
     return false;
   // Skip if we don't have to udpate the existing thumbnail.
   ThumbnailScore current_score;
@@ skipping 11 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