Sync: Change Local IDs to GUID based to avoid ID collision

sync/syncable/directory_backing_store_unittest.cc

 // Copyright 2012 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.
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 3187 matching lines @@
     ASSERT_TRUE(dbs->MigrateVersion77To78());
     ASSERT_EQ(78, dbs->GetVersion());
 
     ASSERT_FALSE(dbs->needs_column_refresh());
   }
 
   ASSERT_TRUE(connection.DoesColumnExist("metas", "base_server_specifics"));
 }
 
 TEST_F(DirectoryBackingStoreTest, MigrateVersion78To79) {
-  const int kInitialNextId = -65542;
-
   sql::Connection connection;
   ASSERT_TRUE(connection.OpenInMemory());
   SetUpVersion78Database(&connection);
 
-  // Double-check the original next_id is what we think it is.
-  sql::Statement s(connection.GetUniqueStatement(
-      "SELECT next_id FROM share_info"));
-  s.Step();
-  ASSERT_EQ(kInitialNextId, s.ColumnInt(0));
-
   scoped_ptr<TestDirectoryBackingStore> dbs(
       new TestDirectoryBackingStore(GetUsername(), &connection));
   ASSERT_FALSE(dbs->needs_column_refresh());
   ASSERT_TRUE(dbs->MigrateVersion78To79());
   ASSERT_EQ(79, dbs->GetVersion());
   ASSERT_FALSE(dbs->needs_column_refresh());
-
-  // Ensure the next_id has been incremented.
-  Directory::MetahandlesMap handles_map;
-  JournalIndex delete_journals;
-  MetahandleSet metahandles_to_purge;
-  STLValueDeleter<Directory::MetahandlesMap> deleter(&handles_map);
-  Directory::KernelLoadInfo load_info;
-
-  s.Clear();
-  ASSERT_TRUE(dbs->Load(&handles_map, &delete_journals, &metahandles_to_purge,
-                        &load_info));
-  EXPECT_LE(load_info.kernel_info.next_id, kInitialNextId - 65536);
 }
 
 TEST_F(DirectoryBackingStoreTest, MigrateVersion79To80) {
   sql::Connection connection;
   ASSERT_TRUE(connection.OpenInMemory());
   SetUpVersion79Database(&connection);
 
   scoped_ptr<TestDirectoryBackingStore> dbs(
       new TestDirectoryBackingStore(GetUsername(), &connection));
   ASSERT_FALSE(dbs->needs_column_refresh());
@@ skipping 870 matching lines @@
   ASSERT_FALSE(dbs->SaveChanges(snapshot));
   // At this point the handler has been posted but not executed.
   ASSERT_FALSE(was_called);
   // Pump the message loop and see that it is executed.
   base::RunLoop().RunUntilIdle();
   ASSERT_TRUE(was_called);
 }
 
 }  // namespace syncable
 }  // namespace syncer