Delete and recreate the sync database if it is corrupt.

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_
 
 #include <set>
 #include <string>
 
@@ skipping 63 matching lines @@
   // DO NOT CALL THIS FROM MORE THAN ONE THREAD EVER.  Also, whichever thread
   // calls SaveChanges *must* be the thread that owns/destroys |this|.
   virtual bool SaveChanges(const Directory::SaveChangesSnapshot& snapshot);
 
  private:
   FRIEND_TEST(DirectoryBackingStoreTest, MigrateVersion67To68);
   FRIEND_TEST(DirectoryBackingStoreTest, MigrateVersion68To69);
   FRIEND_TEST(DirectoryBackingStoreTest, MigrateVersion69To70);
   FRIEND_TEST(DirectoryBackingStoreTest, MigrateVersion70To71);
   FRIEND_TEST(DirectoryBackingStoreTest, ModelTypeIds);
+  FRIEND_TEST(DirectoryBackingStoreTest, Corruption);
   FRIEND_TEST(MigrationTest, ToCurrentVersion);
 
   // General Directory initialization and load helpers.
   DirOpenResult InitializeTables();
   // Returns an sqlite return code, usually SQLITE_DONE.
   int CreateTables();
 
   // Create 'share_info' or 'temp_share_info' depending on value of
   // is_temporary.  Returns an sqlite return code, SQLITE_DONE on success.
   int CreateShareInfoTable(bool is_temporary);
@@ skipping 47 matching lines @@
   static ModelType ModelIdToModelTypeEnum(const string& model_id);
   static string ModelTypeEnumToModelId(ModelType model_type);
 
   // Migration utilities.
   bool AddColumn(const ColumnSpec* column);
   bool RefreshColumns();
   bool SetVersion(int version);
   int GetVersion();
   bool MigrateToSpecifics(const char* old_columns,
                           const char* specifics_column,
-                          void (*handler_function)(
+                          void (*handler_function) (
                               SQLStatement* old_value_query,
                               int old_value_column,
                               sync_pb::EntitySpecifics* mutable_new_value));
 
   // Individual version migrations.
   bool MigrateVersion67To68();
   bool MigrateVersion68To69();
   bool MigrateVersion69To70();
   bool MigrateVersion70To71();
 
@@ skipping 12 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_