Reviewed by Steve Block.

        IndexedDB: Transaction rollback prevented by open SQLite statement
        https://bugs.webkit.org/show_bug.cgi?id=60032

        Add test for veryfing that transaction roll-back works, even with a
        previously opened cursor still around.

        * storage/indexeddb/transaction-rollback-expected.txt: Added.
        * storage/indexeddb/transaction-rollback.html: Added.
2011-05-05  Hans Wennborg  <hans@chromium.org>

        Reviewed by Steve Block.

        IndexedDB: Transaction rollback prevented by open SQLite statement
        https://bugs.webkit.org/show_bug.cgi?id=60032

        Let the IDBTransactionbackendImpl keep track of all open cursors, and
        "close" them (i.e. finalizing the underlying SQLiteStatement) before
        committing or rolling back the transaction. This fixes the problem
        with opened cursors preventing transaction rollback.

        Test: storage/indexeddb/transaction-rollback.html

        * storage/IDBBackingStore.h:
        * storage/IDBCursorBackendImpl.cpp:
        (WebCore::IDBCursorBackendImpl::IDBCursorBackendImpl):
        (WebCore::IDBCursorBackendImpl::~IDBCursorBackendImpl):
        (WebCore::IDBCursorBackendImpl::close):
        * storage/IDBCursorBackendImpl.h:
        * storage/IDBLevelDBBackingStore.cpp:
        * storage/IDBSQLiteBackingStore.cpp:
        * storage/IDBTransactionBackendImpl.cpp:
        (WebCore::IDBTransactionBackendImpl::abort):
        (WebCore::IDBTransactionBackendImpl::registerOpenCursor):
        (WebCore::IDBTransactionBackendImpl::unregisterOpenCursor):
        (WebCore::IDBTransactionBackendImpl::commit):
        (WebCore::IDBTransactionBackendImpl::closeOpenCursors):
        * storage/IDBTransactionBackendImpl.h:
        * storage/IDBTransactionBackendInterface.h:
        (WebCore::IDBTransactionBackendInterface::registerOpenCursor):
        (WebCore::IDBTransactionBackendInterface::unregisterOpenCursor):
2011-05-05  Hans Wennborg  <hans@chromium.org>

        Reviewed by Steve Block.

        IndexedDB: Transaction rollback prevented by open SQLite statement
        https://bugs.webkit.org/show_bug.cgi?id=60032

        Implement two new methods in IDBTransactionBackendInterface.

        * src/IDBTransactionBackendProxy.cpp:
        (WebKit::IDBTransactionBackendProxy::registerOpenCursor):
        (WebKit::IDBTransactionBackendProxy::unregisterOpenCursor):
        * src/IDBTransactionBackendProxy.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@86422 268f45cc-cd09-0410-ab3c-d52691b4dbfc