Use removeFontFace to avoid resetting fontSelector.

Source/core/css/CSSFontSelector.h

Index: Source/core/css/CSSFontSelector.h
diff --git a/Source/core/css/CSSFontSelector.h b/Source/core/css/CSSFontSelector.h
index 4296309ec781776f73cea3b32e006ebdf1fe463f..e5f2279a745d6458bbf8ecf58d46313cf6c821ba 100644
--- a/Source/core/css/CSSFontSelector.h
+++ b/Source/core/css/CSSFontSelector.h
@@ -90,6 +90,7 @@ public:
     CSSSegmentedFontFaceCache* fontFaceCache() { return &m_cssSegmentedFontFaceCache; }
 
     const GenericFontFamilySettings& genericFontFamilySettings() const { return m_genericFontFamilySettings; }
+    void updateGenericFontFamilySettings(Document&);

[dglazkov, 2014/01/29 05:11:50]

This sounds terrifying. Why do we ever need to do that? Can you please explain?

[tasak, 2014/01/29 10:13:43]

So would you help me to fix
fast/text/international/content-language-font-selection.html's regression?

The test uses "window.internals.settings.setStandardFontFamily("Ahem",
"Hant");".

So if we don't update GenericFontFamilySettings, the test will fail.

I'm not sure whether I can modify the layout test or not.

 
     void beginLoadingFontSoon(FontResource*);
     void loadPendingFonts();