Submitted by: eseidel
Reviewed by: mjs
	Moved MIME type support from a hard coded list
        (in two places) to single lists in the corresponding
        *Representation classes.  Also moved the list of types
        supported by WebCore (WebHTMLRepresentation) into WebCore.
        http://bugzilla.opendarwin.org/show_bug.cgi?id=5037

        * WebView.subproj/WebDataSource.m:
        (addTypesFromClass): new inline function
        (+[WebDataSource _repTypesAllowImageTypeOmission:]):
        * WebView.subproj/WebFrameView.m:
        (addTypesFromClass): new inline function
        (+[WebFrameView _viewTypesAllowImageTypeOmission:]):
        * WebView.subproj/WebHTMLRepresentation.h:
        * WebView.subproj/WebHTMLRepresentation.m:
        (+[WebHTMLRepresentation supportedMIMETypes]):
        * WebView.subproj/WebHTMLView.m:
        (+[WebHTMLView supportedMIMETypes]):
        * WebView.subproj/WebHTMLViewPrivate.h:
        * WebView.subproj/WebImageRepresentation.h:
        * WebView.subproj/WebImageRepresentation.m:
        (+[WebImageRepresentation supportedMIMETypes]):
        * WebView.subproj/WebImageView.h:
        * WebView.subproj/WebImageView.m:
        (+[WebImageView supportedMIMETypes]):
        * WebView.subproj/WebPDFRepresentation.h:
        * WebView.subproj/WebPDFRepresentation.m:
        (+[WebPDFRepresentation supportedMIMETypes]):
        * WebView.subproj/WebPDFView.h:
        * WebView.subproj/WebPDFView.m:
        (+[WebPDFView supportedMIMETypes]):
        * WebView.subproj/WebTextRepresentation.h:
        * WebView.subproj/WebTextRepresentation.m:
        (+[WebTextRepresentation supportedMIMETypes]):
        * WebView.subproj/WebTextView.h:
        * WebView.subproj/WebTextView.m:
        (+[WebTextView supportedMIMETypes]):
        * WebView.subproj/WebView.m:
        (+[WebView _viewClass:andRepresentationClass:forMIMEType:]):
        (+[WebView MIMETypesShownAsHTML]): updated to match style
        (+[WebView setMIMETypesShownAsHTML:]): ditto


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@10575 268f45cc-cd09-0410-ab3c-d52691b4dbfc