Reviewed by Oliver.

    Reviewed by Oliver.

        <rdar://problem/5636742>
        CrashTracer: [USER] 1302 crashes in Safari at com.apple.WebCore: WTF::Vector<char, 0ul>::reserveCapacity + 78

        When loading full-frame plug-ins, disable buffering data for the main resource loader. Otherwise, this can cause us
        to crash when loading large files such as movies in the browser. We already do this for embedded plug-ins.

        * WebCore.base.exp:
        * loader/DocumentLoader.h:
        (WebCore::DocumentLoader::mainResourceLoader):
        New accessor method.

        * loader/PluginDocument.cpp:
        (WebCore::PluginTokenizer::writeRawData):
        Disable buffering for the main resource loader.

        * loader/ResourceLoader.cpp:
        (WebCore::ResourceLoader::setShouldBufferData):
        * loader/ResourceLoader.h:
        Have this free the buffer when disabling buffering.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@29593 268f45cc-cd09-0410-ab3c-d52691b4dbfc