Move most visited item state info from InstantController to InstantService.

chrome/browser/search/instant_service.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_
 #define CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "chrome/browser/history/history_types.h"
 #include "chrome/common/instant_restricted_id_cache.h"
 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class GURL;
 class InstantIOContext;
 class Profile;
 
 namespace net {
@@ skipping 30 matching lines @@
     return process_ids_.size();
   }
 #endif
 
   // Most visited item API.
 
   // Adds |items| to the |most_visited_item_cache_| assigning restricted IDs in
   // the process.
   void AddMostVisitedItems(const std::vector<InstantMostVisitedItem>& items);
 
+  // Invoked by the InstantController when the Instant page wants to delete a
+  // Most Visited item.
+  void DeleteMostVisitedItem(const GURL& url);
+
+  // Invoked by the InstantController when the Instant page wants to undo the
+  // blacklist action.
+  void UndoMostVisitedDeletion(const GURL& url);
+
+  // Invoked by the InstantController when the Instant page wants to undo all
+  // Most Visited deletions.
+  void UndoAllMostVisitedDeletions();
+
   // Returns the last added InstantMostVisitedItems. After the call to
   // |AddMostVisitedItems|, the caller should call this to get the items with
   // the assigned IDs.
   void GetCurrentMostVisitedItems(
       std::vector<InstantMostVisitedItemIDPair>* items) const;
 
-  // If the |most_visited_item_id| is found in the cache, sets the |item| to it
-  // and returns true.
-  bool GetMostVisitedItemForID(InstantRestrictedID most_visited_item_id,
-                               InstantMostVisitedItem* item) const;
-
  private:
   // Overridden from BrowserContextKeyedService:
   virtual void Shutdown() OVERRIDE;
 
   // Overridden from content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  // If the |most_visited_item_id| is found in the cache, sets the |item| to it
+  // and returns true.
+  bool GetMostVisitedItemForID(InstantRestrictedID most_visited_item_id,
+                               InstantMostVisitedItem* item) const;
+
+  // Called when we get new most visited items from TopSites, registered as an
+  // async callback. Parses them and sends them to the renderer via
+  // SendMostVisitedItems.
+  void OnMostVisitedItemsReceived(const history::MostVisitedURLList& data);
+
   Profile* const profile_;
 
   // The process ids associated with Instant processes.
   std::set<int> process_ids_;
 
   // A cache of the InstantMostVisitedItems sent to the Instant Pages.
   InstantRestrictedIDCache<InstantMostVisitedItem> most_visited_item_cache_;
 
   content::NotificationRegistrar registrar_;
 
   scoped_refptr<InstantIOContext> instant_io_context_;
 
+  // Used for Top Sites async retrieval.
+  base::WeakPtrFactory<InstantService> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(InstantService);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_