Use removeFontFace to avoid resetting fontSelector.

Source/core/testing/InternalSettings.cpp

Index: Source/core/testing/InternalSettings.cpp
diff --git a/Source/core/testing/InternalSettings.cpp b/Source/core/testing/InternalSettings.cpp
index 074c6ed9e5dcb5bc3322131c8fc2b681c3f3f3ef..2a1ecbef9faab498bf8434b7e4264b4c6b64cacf 100644
--- a/Source/core/testing/InternalSettings.cpp
+++ b/Source/core/testing/InternalSettings.cpp
@@ -230,6 +230,7 @@ void InternalSettings::setStandardFontFamily(const AtomicString& family, const S
     if (code == USCRIPT_INVALID_CODE)
         return;
     settings()->genericFontFamilySettings().setStandard(family, code);
+    settings()->notifyGenericFontFamilyChange();

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

Here, we just need a helper that recursively visits the frames and does the
work. This helper does not need to live anywhere outside of this special-case
testing code.

     m_page->setNeedsRecalcStyleInAllFrames();
 }
 
@@ -240,6 +241,7 @@ void InternalSettings::setSerifFontFamily(const AtomicString& family, const Stri
     if (code == USCRIPT_INVALID_CODE)
         return;
     settings()->genericFontFamilySettings().setSerif(family, code);
+    settings()->notifyGenericFontFamilyChange();
     m_page->setNeedsRecalcStyleInAllFrames();
 }
 
@@ -250,6 +252,7 @@ void InternalSettings::setSansSerifFontFamily(const AtomicString& family, const
     if (code == USCRIPT_INVALID_CODE)
         return;
     settings()->genericFontFamilySettings().setSansSerif(family, code);
+    settings()->notifyGenericFontFamilyChange();
     m_page->setNeedsRecalcStyleInAllFrames();
 }
 
@@ -260,6 +263,7 @@ void InternalSettings::setFixedFontFamily(const AtomicString& family, const Stri
     if (code == USCRIPT_INVALID_CODE)
         return;
     settings()->genericFontFamilySettings().setFixed(family, code);
+    settings()->notifyGenericFontFamilyChange();
     m_page->setNeedsRecalcStyleInAllFrames();
 }
 
@@ -270,6 +274,7 @@ void InternalSettings::setCursiveFontFamily(const AtomicString& family, const St
     if (code == USCRIPT_INVALID_CODE)
         return;
     settings()->genericFontFamilySettings().setCursive(family, code);
+    settings()->notifyGenericFontFamilyChange();
     m_page->setNeedsRecalcStyleInAllFrames();
 }
 
@@ -280,6 +285,7 @@ void InternalSettings::setFantasyFontFamily(const AtomicString& family, const St
     if (code == USCRIPT_INVALID_CODE)
         return;
     settings()->genericFontFamilySettings().setFantasy(family, code);
+    settings()->notifyGenericFontFamilyChange();
     m_page->setNeedsRecalcStyleInAllFrames();
 }
 
@@ -290,6 +296,7 @@ void InternalSettings::setPictographFontFamily(const AtomicString& family, const
     if (code == USCRIPT_INVALID_CODE)
         return;
     settings()->genericFontFamilySettings().setPictograph(family, code);
+    settings()->notifyGenericFontFamilyChange();
     m_page->setNeedsRecalcStyleInAllFrames();
 }