Create new Autofill tables as part of DB migration.

components/webdata/common/web_database_migration_unittest.cc

Index: components/webdata/common/web_database_migration_unittest.cc
diff --git a/components/webdata/common/web_database_migration_unittest.cc b/components/webdata/common/web_database_migration_unittest.cc
index a72140ca4ecaabc085865c43e3fc1143c1372f83..16f383f4c90ef2150faddd176cfb7d7897fd4bcf 100644
--- a/components/webdata/common/web_database_migration_unittest.cc
+++ b/components/webdata/common/web_database_migration_unittest.cc
@@ -292,6 +292,40 @@ TEST_F(WebDatabaseMigrationTest, MigrateEmptyToCurrent) {
   }
 }
 
+// Tests that absent Autofill tables do not create any problems when migrating
+// from a DB written by the earliest publicly released version of Chrome.
+TEST_F(WebDatabaseMigrationTest, MigrateVersion20ToCurrent) {
+  ASSERT_NO_FATAL_FAILURE(LoadDatabase(FILE_PATH_LITERAL("version_20.sql")));
+
+  // Verify pre-conditions.
+  {
+    sql::Connection connection;
+    ASSERT_TRUE(connection.Open(GetDatabasePath()));
+
+    EXPECT_FALSE(connection.DoesTableExist("autofill"));
+    EXPECT_FALSE(connection.DoesTableExist("autofill_profiles"));
+    EXPECT_FALSE(connection.DoesTableExist("credit_cards"));
+  }
+
+  DoMigration();
+
+  // Verify post-conditions.  These are expectations for current version of the
+  // database.
+  {
+    sql::Connection connection;
+    ASSERT_TRUE(connection.Open(GetDatabasePath()));
+
+    // Check version.
+    EXPECT_EQ(kCurrentTestedVersionNumber, VersionFromConnection(&connection));
+
+    // Mostly this test just verifies that no SQL errors occur during migration;
+    // but might as well verify that the tables were created as well.
+    EXPECT_TRUE(connection.DoesTableExist("autofill"));
+    EXPECT_TRUE(connection.DoesTableExist("autofill_profiles"));
+    EXPECT_TRUE(connection.DoesTableExist("credit_cards"));
+  }
+}
+
 // Tests that rows with empty values get removed from the autofill tables.
 TEST_F(WebDatabaseMigrationTest, MigrateVersion21ToCurrent) {
   ASSERT_NO_FATAL_FAILURE(LoadDatabase(FILE_PATH_LITERAL("version_21.sql")));