WebCore:

WebCore:

        Reviewed by Darin.

        <rdar://problem/5298296> XMLHttpRequest readyState 3 & responseText buffer issues

        Add a shouldContentSniff flag to ResourceLoader and ResourceHandle and have XMLHttpRequest
        pass in false when creating its subresource loader.

        * WebCore.exp:
        * loader/MainResourceLoader.cpp:
        (WebCore::MainResourceLoader::MainResourceLoader):
        (WebCore::MainResourceLoader::loadNow):
        * loader/ResourceLoader.cpp:
        (WebCore::ResourceLoader::ResourceLoader):
        (WebCore::ResourceLoader::load):
        * loader/ResourceLoader.h:
        * loader/SubresourceLoader.cpp:
        (WebCore::SubresourceLoader::SubresourceLoader):
        (WebCore::SubresourceLoader::create):
        * loader/SubresourceLoader.h:
        * loader/mac/NetscapePlugInStreamLoaderMac.mm:
        (WebCore::NetscapePlugInStreamLoader::NetscapePlugInStreamLoader):
        * platform/mac/WebCoreSystemInterface.h:
        * platform/mac/WebCoreSystemInterface.mm:
        * platform/network/ResourceHandle.cpp:
        (WebCore::ResourceHandle::ResourceHandle):
        (WebCore::ResourceHandle::create):
        * platform/network/ResourceHandle.h:
        * platform/network/ResourceHandleInternal.h:
        (WebCore::ResourceHandleInternal::ResourceHandleInternal):
        * platform/network/mac/ResourceHandleMac.mm:
        (WebCore::ResourceHandle::start):
        * xml/XMLHttpRequest.cpp:
        (WebCore::XMLHttpRequest::send):

WebKit:

        Reviewed by Darin.

        <rdar://problem/5298296> XMLHttpRequest readyState 3 & responseText buffer issues

        Expose WKSetNSURLRequestShouldContentSniff to WebCore.

        * WebCoreSupport/WebSystemInterface.m:
        (InitWebCoreSystemInterface):

LayoutTests:

        Reviewed by Darin.

        <rdar://problem/5298296> XMLHttpRequest readyState 3 & responseText buffer issues

        * http/tests/xmlhttprequest/resources/small-chunks.cgi: Added.
        * http/tests/xmlhttprequest/small-chunks-response-text-expected.txt: Added.
        * http/tests/xmlhttprequest/small-chunks-response-text.html: Added.
        * platform/mac-leopard/Skipped:
        * platform/mac-tiger/Skipped:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@25274 268f45cc-cd09-0410-ab3c-d52691b4dbfc