Fix EntryKernel leak if sync database load fails

chrome/browser/sync/syncable/directory_backing_store.h

 // Copyright (c) 2009 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_SYNC_SYNCABLE_DIRECTORY_BACKING_STORE_H_
 #define CHROME_BROWSER_SYNC_SYNCABLE_DIRECTORY_BACKING_STORE_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 105 matching lines @@
   bool UpdateEntryToDB(const EntryKernel& entry);
 
   // Creates a new sqlite3 handle to the backing database. Sets sqlite operation
   // timeout preferences and registers our overridden sqlite3 operators for
   // said handle.  Returns true on success, false if the sqlite open operation
   // did not succeed.
   bool OpenAndConfigureHandleHelper(sqlite3** handle) const;
   // Initialize and destroy load_dbhandle_.  Broken out for testing.
   bool BeginLoad();
   void EndLoad();
+  DirOpenResult DoLoad(MetahandlesIndex* entry_bucket,
+      Directory::KernelLoadInfo* kernel_load_info);
 
   // Close save_dbhandle_.  Broken out for testing.
   void EndSave();
 
   // Removes each entry whose metahandle is in |handles| from the database.
   // Does synchronous I/O.  Returns false on error.
   bool DeleteEntries(const MetahandleSet& handles);
 
   // Lazy creation of save_dbhandle_ for use by SaveChanges code path.
   sqlite3* LazyGetSaveHandle();
@@ skipping 42 matching lines @@
   // Set to true if migration left some old columns around that need to be
   // discarded.
   bool needs_column_refresh_;
 
   DISALLOW_COPY_AND_ASSIGN(DirectoryBackingStore);
 };
 
 }  // namespace syncable
 
 #endif  // CHROME_BROWSER_SYNC_SYNCABLE_DIRECTORY_BACKING_STORE_H_