Reviewed by Maciej.

    Reviewed by Maciej.

        - removed some of the WebKit dependencies in WebFrameLoader

        * Loader/WebFrameLoader.m:
        (-[WebFrameLoader loadURL:referrer:loadType:target:triggeringEvent:form:formValues:]):
        (-[WebFrameLoader _downloadWithLoadingConnection:request:response:proxy:]):
        (-[WebFrameLoader reload]):
        (-[WebFrameLoader didChangeTitleForDocument:]):
        * Loader/WebFrameLoaderClient.h:
        * WebView/WebFrame.m:
        (-[WebFrame _loadItem:withLoadType:]):
        (-[WebFrame _loadURL:referrer:intoChild:]):
        (-[WebFrame _setTitle:forURL:]):
        (-[WebFrame _downloadWithLoadingConnection:request:response:proxy:]):
        * WebView/WebFrameInternal.h:

        - some other tweaks

        * Misc/WebNSURLRequestExtras.m:
        (-[NSMutableURLRequest _web_setHTTPReferrer:]):
        (-[NSMutableURLRequest _web_setHTTPUserAgent:]):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@16911 268f45cc-cd09-0410-ab3c-d52691b4dbfc