Revert 98656 - Make a new integer field in sql::MetaTable (a per-profile db) containing a counter...

chrome/browser/history/download_database.h

Index: chrome/browser/history/download_database.h
===================================================================
--- chrome/browser/history/download_database.h	(revision 98659)
+++ chrome/browser/history/download_database.h	(working copy)
@@ -7,7 +7,6 @@
 #pragma once
 
 #include "chrome/browser/history/history_types.h"
-#include "sql/meta_table.h"
 
 struct DownloadPersistentStoreInfo;
 class FilePath;
@@ -25,8 +24,6 @@
   DownloadDatabase();
   virtual ~DownloadDatabase();
 
-  int next_download_id() const { return next_id_; }
-
   // Get all the downloads from the database.
   void QueryDownloads(std::vector<DownloadPersistentStoreInfo>* results);
 
@@ -66,9 +63,6 @@
   bool DropDownloadTable();
 
  private:
-  int next_id_;
-  sql::MetaTable meta_table_;
-
   DISALLOW_COPY_AND_ASSIGN(DownloadDatabase);
 };