Reviewed by Adam.

    Reviewed by Adam.

        Implement the rest of the WebDatabaseManager API.

        * COMEnumVariant.h:
        * Interfaces/IWebDatabaseManager.idl:
        * WebDatabaseManager.cpp:
        (isEqual):
        (DatabaseDetailsPropertyBag::DatabaseDetailsPropertyBag):
        (DatabaseDetailsPropertyBag::~DatabaseDetailsPropertyBag):
        (DatabaseDetailsPropertyBag::createInstance):
        (DatabaseDetailsPropertyBag::AddRef):
        (DatabaseDetailsPropertyBag::Release):
        (DatabaseDetailsPropertyBag::QueryInterface):
        (DatabaseDetailsPropertyBag::Read):
        (DatabaseDetailsPropertyBag::Write):
        (WebDatabaseManager::detailsForDatabaseWithOrigin):
        (WebDatabaseManager::deleteAllDatabases):
        (WebDatabaseManager::deleteDatabasesWithOrigin):
        (WebDatabaseManager::deleteDatabaseWithOrigin):
        * WebDatabaseManager.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@28088 268f45cc-cd09-0410-ab3c-d52691b4dbfc