Reviewed by Oliver.

        - moved a bunch of WebFrameBridge code down to WebCoreFrameBridge, now that it no longer has any WebKit dependencies

        * WebCore.xcodeproj/project.pbxproj:
        * bridge/mac/WebCoreFrameBridge.h:
        * bridge/mac/WebCoreFrameBridge.mm:
        (stringByCollapsingNonPrintingCharacters):
        (-[WebCoreFrameBridge setTitle:]):
        (-[WebCoreFrameBridge didFirstLayout]):
        (-[WebCoreFrameBridge notifyIconChanged:]):
        (-[WebCoreFrameBridge originalRequestURL]):
        (-[WebCoreFrameBridge isLoadTypeReload]):
        (-[WebCoreFrameBridge frameDetached]):
        (-[WebCoreFrameBridge tokenizerProcessedData]):
        (-[WebCoreFrameBridge receivedData:textEncodingName:]):
        (-[WebCoreFrameBridge startLoadingResource:withMethod:URL:customHeaders:]):
        (-[WebCoreFrameBridge objectLoadedFromCacheWithURL:response:data:]):
        (-[WebCoreFrameBridge startLoadingResource:withMethod:URL:customHeaders:postData:]):
        (-[WebCoreFrameBridge reportClientRedirectToURL:delay:fireDate:lockHistory:isJavaScriptFormAction:]):
        (-[WebCoreFrameBridge reportClientRedirectCancelled:]):
        (-[WebCoreFrameBridge loadURL:referrer:reload:userGesture:target:triggeringEvent:form:formValues:]):
        (-[WebCoreFrameBridge postWithURL:referrer:target:data:contentType:triggeringEvent:form:formValues:]):
        (-[WebCoreFrameBridge syncLoadResourceWithMethod:URL:customHeaders:postData:finalURL:responseHeaders:statusCode:]):
        (-[WebCoreFrameBridge incomingReferrer]):
        (-[WebCoreFrameBridge isReloading]):
        (-[WebCoreFrameBridge handledOnloadEvents]):
        (-[WebCoreFrameBridge mainResourceURLResponse]):
        (-[WebCoreFrameBridge loadEmptyDocumentSynchronously]):
        * loader/mac/LoaderNSURLExtras.h:
        * loader/mac/LoaderNSURLRequestExtras.h: Added.
        * loader/mac/LoaderNSURLRequestExtras.m: Added.
        (isConditionalRequest):
        (setHTTPReferrer):
        * loader/mac/WebFrameLoader.mm:
        * loader/mac/WebSubresourceLoader.mm:

WebKit:

        Reviewed by Oliver.
        
        - liberate more WebKit code down to WebCore

        * WebCoreSupport/WebFrameBridge.h:
        * WebCoreSupport/WebFrameBridge.m:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@17025 268f45cc-cd09-0410-ab3c-d52691b4dbfc