2007-10-29 Jon Honeycutt <jhoneycutt@apple.com>

2007-10-29  Jon Honeycutt  <jhoneycutt@apple.com>

        Reviewed by Anders.

        Speculative fix for <rdar://5538489> Safari 3.0.4 seed hangs at
        http://tgmonline.futuregamer.it/ (works fine on Safari 2.0.4 and Safari
        Beta for Mac)

        I cannot reproduce this hang, but it is likely due to our not limiting
        WM_USER+1 messages or InvalidateRect calls for a plugin with initially-
        unknown MIME type. The embed tag on the page is missing a type
        attribute, so as fallback, we choose to load the Flash plugin based on
        the file extension of "swf." However, we do not record this determined
        MIME type, and so our quirks cannot be established.

        Changed findPlugin() so that, if it fails to find a plugin for the
        given MIME type, it will lookup the MIME type for the file extension -
        overwriting its passed MIME type parameter - and search for a plugin
        for that MIME type.

        * plugins/win/PluginDatabaseWin.cpp:
        (WebCore::PluginDatabaseWin::pluginForMIMEType): Added an early return
        if the MIME type is empty
        (WebCore::PluginDatabaseWin::MIMETypeForExtension): Added to replace
        pluginForExtension. Returns a String with the MIME type for the file
        extension. Also, changed to use case-insensitive compares
        (WebCore::PluginDatabaseWin::findPlugin): If we fail to find a plugin
        for the given extension, overwrite the incoming MIME type parameter
        with the MIME type for the file extension, and search for a plugin for
        that MIME type. Also, changed the way that the extension is determined
        (WebCore::PluginDatabaseWin::createPluginView): Pass a mutable String
        to findPlugin() so that it can be updated if necessary
        * plugins/win/PluginDatabaseWin.h: Changed findPlugin() to take a non-
        const String, removed definition of pluginForExtension, added
        definition for MIMETypeForExtension
        * plugins/win/PluginPackageWin.cpp:
        (WebCore::PluginPackageWin::fetchInfo): Store the MIME type in
        lowercase for easier compares

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@27236 268f45cc-cd09-0410-ab3c-d52691b4dbfc