https://bugs.webkit.org/show_bug.cgi?id=76010

Reviewed by Adam Barth.

This patch removes redundant code from DOMWindowSQLDatabase.cpp.

- Remove window->frame() check, since window->frame() is always true when
  window->isCurrentlyDisplayedInFrame() is true.
- window->frame()->document() can just be window->document()

Tests: storage/open-database-creation-callback-isolated-world.html
       storage/open-database-creation-callback.html
       storage/open-database-empty-version.html
       storage/open-database-over-quota.html
       storage/open-database-set-empty-version.html
       storage/open-database-while-transaction-in-progress.html

* storage/DOMWindowSQLDatabase.cpp:
(WebCore::DOMWindowSQLDatabase::openDatabase):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@104659 268f45cc-cd09-0410-ab3c-d52691b4dbfc