Reviewed by Tim Omernick.

    Reviewed by Tim Omernick.

        IconDatabase now respects private browsing via the use of in memory, temporary tables

        * bridge/mac/WebCoreIconDatabaseBridge.mm:
        (-[WebCoreIconDatabaseBridge iconForPageURL:withSize:]):
        (-[WebCoreIconDatabaseBridge iconURLForPageURL:]): Renamed WebCore::IconDatabase methods, changes reflected here

        * icon/IconDatabase.cpp:
        (WebCore::IconDatabase::clearDatabase):
        (WebCore::IconDatabase::deletePrivateTables):
        (WebCore::IconDatabase::imageDataForIconID):
        (WebCore::IconDatabase::imageDataForIconURL):
        (WebCore::IconDatabase::imageDataForPageURL):
        (WebCore::IconDatabase::setPrivateBrowsingEnabled):
        (WebCore::IconDatabase::iconForPageURL):
        (WebCore::IconDatabase::iconURLForPageURL):
        (WebCore::IconDatabase::setIconDataForIconURL):
        (WebCore::IconDatabase::performSetIconDataForIconID):
        (WebCore::IconDatabase::establishTemporaryIconIDForEscapedIconURL):
        (WebCore::IconDatabase::establishIconIDForEscapedIconURL):
        (WebCore::IconDatabase::setHaveNoIconForIconURL):
        (WebCore::IconDatabase::setIconURLForPageURL):
        (WebCore::IconDatabase::performSetIconURLForPageURL):
        (WebCore::IconDatabase::hasIconForIconURL):
        -Some style/comment cleanups, but mainly putting private browsing handling in place

        * icon/IconDatabase.h:  Some methods added, others renamed, some comments added

        * icon/SQLStatement.cpp:
        (WebCore::SQLStatement::getColumnName):
        (WebCore::SQLStatement::getColumnName16):
        (WebCore::SQLStatement::getColumnText):
        (WebCore::SQLStatement::getColumnText16):
        -The above 4 had changes to return String() for empty results instead of "" as it's less expensive;

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@15175 268f45cc-cd09-0410-ab3c-d52691b4dbfc