Make DownloadHistory observe manager, items

content/public/browser/download_item.h

Index: content/public/browser/download_item.h
diff --git a/content/public/browser/download_item.h b/content/public/browser/download_item.h
index d0fc397159b1534b08367770adfe9fd5a2ae799d..d3b1d2f7204a1eba028dcbbbd251a10acc1d196d 100644
--- a/content/public/browser/download_item.h
+++ b/content/public/browser/download_item.h
@@ -43,7 +43,6 @@ class BrowserContext;
 class DownloadId;
 class DownloadManager;
 class WebContents;
-struct DownloadPersistentStoreInfo;
 
 // One DownloadItem per download. This is the model class that stores all the
 // state for a download. Multiple views, such as a tab's download shelf and the
@@ -89,10 +88,6 @@ class CONTENT_EXPORT DownloadItem : public base::SupportsUserData {
                                   // TARGET_DISPOSITION_OVERWRITE.
   };
 
-  // A fake download table ID which represents a download that has started,
-  // but is not yet in the table.
-  static const int kUninitializedHandle;
-
   static const char kEmptyFileHash[];
 
   // Interface that observers of a particular download must implement in order
@@ -223,8 +218,6 @@ class CONTENT_EXPORT DownloadItem : public base::SupportsUserData {
   // true.
   virtual void OnContentCheckCompleted(DownloadDangerType danger_type) = 0;
 
-  virtual bool IsPersisted() const = 0;
-
   // Accessors
   virtual const std::string& GetHash() const = 0;
   virtual DownloadState GetState() const = 0;
@@ -245,7 +238,6 @@ class CONTENT_EXPORT DownloadItem : public base::SupportsUserData {
   virtual DownloadId GetGlobalId() const = 0;
   virtual base::Time GetStartTime() const = 0;
   virtual base::Time GetEndTime() const = 0;
-  virtual int64 GetDbHandle() const = 0;
   virtual bool IsPaused() const = 0;
   virtual bool GetOpenWhenComplete() const = 0;
   virtual void SetOpenWhenComplete(bool open) = 0;
@@ -269,7 +261,6 @@ class CONTENT_EXPORT DownloadItem : public base::SupportsUserData {
   virtual const std::string& GetETag() const = 0;
 
   virtual DownloadInterruptReason GetLastReason() const = 0;
-  virtual DownloadPersistentStoreInfo GetPersistentStoreInfo() const = 0;
   virtual BrowserContext* GetBrowserContext() const = 0;
   virtual WebContents* GetWebContents() const = 0;