Make IconDatabaseNone.cpp compile with -Wunused and pass check-for-exit-time...

        Reviewed by Sam Weinig.

        * loader/icon/IconDatabaseNone.cpp:
        (WebCore::IconDatabase::defaultDatabaseFilename): Use DEFINE_STATIC_LOCAL().
        (WebCore::IconDatabase::open): Commented out unused parameter.
        (WebCore::IconDatabase::setPrivateBrowsingEnabled): Ditto.
        (WebCore::IconDatabase::iconForPageURL): Ditto.
        (WebCore::IconDatabase::iconURLForPageURL): Ditto.
        (WebCore::IconDatabase::defaultIcon): Ditto.
        (WebCore::IconDatabase::retainIconForPageURL): Ditto.
        (WebCore::IconDatabase::releaseIconForPageURL): Ditto.
        (WebCore::IconDatabase::setIconDataForIconURL): Ditto.
        (WebCore::IconDatabase::setIconURLForPageURL): Ditto.
        (WebCore::IconDatabase::setEnabled): Ditto.
        (WebCore::IconDatabase::pageURLMappingCount): Added stub.
        (WebCore::IconDatabase::retainedPageURLCount): Ditto.
        (WebCore::IconDatabase::iconRecordCount): Ditto.
        (WebCore::IconDatabase::iconRecordCountWithData): Ditto.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@41109 268f45cc-cd09-0410-ab3c-d52691b4dbfc