Reviewed by Anders Carlsson.

        - eliminate WebCoreTextRenderer

        * WebCore.base.exp: Updated.
        * WebCore.xcodeproj/project.pbxproj: Removed WebCoreTextRenderer.{h,mm}
            and promoted WebFontCache.h to private.
        * platform/graphics/Font.cpp:
        (WebCore::Font::setShouldUseSmoothing): Added this static setter for
            a new file-static boolean.
        (WebCore::Font::shouldUseSmoothing): Added this static getter.
        * platform/graphics/Font.h: Decleared setShouldUseSmoothing() and
            shouldUseSmoothing().
        * platform/graphics/mac/FontMac.mm:
        (WebCore::Font::drawGlyphs): Use Font::shouldUseSmoothing() instead of
        WebCoreShouldUseFontSmoothing().
        * platform/graphics/mac/WebLayer.mm: Removed unneeded #import.
        * platform/mac/WebCoreTextRenderer.h: Removed.
        * platform/mac/WebCoreTextRenderer.mm: Removed.

WebKit:

        Reviewed by Anders Carlsson.

        - WebKit project part of eliminating WebCoreTextRenderer

        * WebKit.xcodeproj/project.pbxproj: Changed WebKitNSStringExtras.m to
            compile as Objective-C++.

WebKit/mac:

        Reviewed by Anders Carlsson.

        - WebKit part of eliminating WebCoreTextRenderer

        * Misc/WebKitNSStringExtras.m:
        (webkit_CGCeiling): Added.
        (-[NSString _web_drawAtPoint:font:textColor:]): Replaced the malloc()ed
            string buffer with a Vector. Moved code from
            WebCoreDrawTextAtPoint() to here.
        (-[NSString _web_drawDoubledAtPoint:withTopColor:bottomColor:font:]):
        (-[NSString _web_widthWithFont:]): Replaced the malloc()ed string buffer
            with a Vector. Moved code from WebCoreTextFloatWidth() to here.
        * WebView/WebHTMLView.mm:
        (-[WebHTMLView _addToStyle:fontA:fontB:]): Replaced call to
            WebCoreFindFont() with use of
            +[WebFontCache fontWithFamily:traits:weight:size:].
        * WebView/WebView.mm:
        (+[WebView _setAlwaysUsesComplexTextCodePath:]): Changed to call
            Font::setCodePath() directly.
        (+[WebView _setShouldUseFontSmoothing:]): Changed to call
            Font::setShouldUseSmoothing().
        (+[WebView _shouldUseFontSmoothing]): Changed to call 
            Font::shouldUseSmoothing().



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@44395 268f45cc-cd09-0410-ab3c-d52691b4dbfc