http/tests/inspector/indexeddb/database-structure.html start to crash after r124675
https://bugs.webkit.org/show_bug.cgi?id=93225

Reviewed by Tony Chang.

Source/WebCore:

Tests - the disabled indexeddb inspector tests are re-enabled.

* Modules/indexeddb/IDBDatabaseBackendImpl.cpp:
(WebCore::IDBDatabaseBackendImpl::IDBDatabaseBackendImpl):
(WebCore::IDBDatabaseBackendImpl::close):
Detect re-entrancy and bail.

* Modules/indexeddb/IDBDatabaseBackendImpl.h:
(IDBDatabaseBackendImpl):

LayoutTests:

* platform/chromium/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk/LayoutTests@130198 268f45cc-cd09-0410-ab3c-d52691b4dbfc