downloads: break downloads.js into more classes/files.

chrome/browser/ui/webui/downloads_dom_handler.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_DOWNLOADS_DOM_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_DOWNLOADS_DOM_HANDLER_H_
 
 #include <set>
 #include <vector>
 
@@ skipping 78 matching lines @@
 
   // Callback for the "openDownloadsFolder" message - opens the downloads
   // folder.
   void HandleOpenDownloadsFolder(const base::ListValue* args);
 
  protected:
   // These methods are for mocking so that most of this class does not actually
   // depend on WebUI. The other methods that depend on WebUI are
   // RegisterMessages() and HandleDrag().
   virtual content::WebContents* GetWebUIWebContents();
-  virtual void CallDownloadsList(const base::ListValue& downloads);
-  virtual void CallDownloadUpdated(const base::ListValue& download);
+  virtual void CallUpdateAll(const base::ListValue& list);
+  virtual void CallUpdateItem(const base::DictionaryValue& item);
 
   // Schedules a call to SendCurrentDownloads() in the next message loop
   // iteration. Protected rather than private for use in tests.
   void ScheduleSendCurrentDownloads();
 
   // Protected for testing.
   virtual content::DownloadManager* GetMainNotifierManager();
 
   // Actually remove downloads with an ID in |removals_|. This cannot be undone.
   void FinalizeRemovals();
@@ skipping 40 matching lines @@
   // If |main_notifier_| observes an incognito profile, then this observes the
   // DownloadManager for the original profile; otherwise, this is NULL.
   scoped_ptr<AllDownloadItemNotifier> original_notifier_;
 
   // IDs of downloads to remove when this handler gets deleted.
   std::vector<std::set<uint32>> removals_;
 
   // Whether a call to SendCurrentDownloads() is currently scheduled.
   bool update_scheduled_;
 
+  // IDs of new downloads that the page doesn't know about yet.
+  std::set<uint32> new_downloads_;
+
   base::WeakPtrFactory<DownloadsDOMHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadsDOMHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_DOWNLOADS_DOM_HANDLER_H_