Make DownloadHistory observe manager, items

chrome/browser/download/chrome_download_manager_delegate.h

Index: chrome/browser/download/chrome_download_manager_delegate.h
diff --git a/chrome/browser/download/chrome_download_manager_delegate.h b/chrome/browser/download/chrome_download_manager_delegate.h
index 219942581b817fdc0e6201a295abd57548779c41..0762b7de416a8afc53936ec08524b99e8e33b935 100644
--- a/chrome/browser/download/chrome_download_manager_delegate.h
+++ b/chrome/browser/download/chrome_download_manager_delegate.h
@@ -10,8 +10,9 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
-#include "chrome/browser/safe_browsing/download_protection_service.h"
+#include "chrome/browser/download/download_history.h"
 #include "chrome/browser/download/download_path_reservation_tracker.h"
+#include "chrome/browser/safe_browsing/download_protection_service.h"
 #include "content/public/browser/download_danger_type.h"
 #include "content/public/browser/download_item.h"
 #include "content/public/browser/download_manager_delegate.h"
@@ -57,6 +58,9 @@ class ChromeDownloadManagerDelegate
 
   void SetDownloadManager(content::DownloadManager* dm);
 
+  void AddHistoryObserver(DownloadHistory::Observer* observer);
+  void RemoveHistoryObserver(DownloadHistory::Observer* observer);
+
   // Should be called before the first call to ShouldCompleteDownload() to
   // disable SafeBrowsing checks for |item|.
   static void DisableSafeBrowsing(content::DownloadItem* item);
@@ -75,17 +79,6 @@ class ChromeDownloadManagerDelegate
       const base::Closure& complete_callback) OVERRIDE;
   virtual bool ShouldOpenDownload(content::DownloadItem* item) OVERRIDE;
   virtual bool GenerateFileHash() OVERRIDE;
-  virtual void AddItemToPersistentStore(content::DownloadItem* item) OVERRIDE;
-  virtual void UpdateItemInPersistentStore(
-      content::DownloadItem* item) OVERRIDE;
-  virtual void UpdatePathForItemInPersistentStore(
-      content::DownloadItem* item,
-      const FilePath& new_path) OVERRIDE;
-  virtual void RemoveItemFromPersistentStore(
-      content::DownloadItem* item) OVERRIDE;
-  virtual void RemoveItemsFromPersistentStoreBetween(
-      base::Time remove_begin,
-      base::Time remove_end) OVERRIDE;
   virtual void GetSaveDir(content::BrowserContext* browser_context,
                           FilePath* website_save_dir,
                           FilePath* download_save_dir,
@@ -102,7 +95,6 @@ class ChromeDownloadManagerDelegate
   void ClearLastDownloadPath();
 
   DownloadPrefs* download_prefs() { return download_prefs_.get(); }
-  DownloadHistory* download_history() { return download_history_.get(); }
 
  protected:
   // So that test classes can inherit from this for override purposes.
@@ -213,9 +205,6 @@ class ChromeDownloadManagerDelegate
       content::DownloadDangerType danger_type,
       const FilePath& target_path);
 
-  // Callback from history system.
-  void OnItemAddedToPersistentStore(int32 download_id, int64 db_handle);
-
   // Check policy of whether we should open this download with a web intents
   // dispatch.
   bool ShouldOpenWithWebIntents(const content::DownloadItem* item);