Use removeFontFace to avoid resetting fontSelector.

Source/web/WebSettingsImpl.cpp

Index: Source/web/WebSettingsImpl.cpp
diff --git a/Source/web/WebSettingsImpl.cpp b/Source/web/WebSettingsImpl.cpp
index 0114f6eadb01fe88b72a80d94d4465ff16d8306d..60a63ec6a2c44d55642beddd4a5fc6839627f678 100644
--- a/Source/web/WebSettingsImpl.cpp
+++ b/Source/web/WebSettingsImpl.cpp
@@ -65,36 +65,43 @@ WebSettingsImpl::WebSettingsImpl(Settings* settings, InspectorController* inspec
 void WebSettingsImpl::setStandardFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->genericFontFamilySettings().setStandard(font, script);
+    m_settings->notifyGenericFontFamilyChange();
 }
 
 void WebSettingsImpl::setFixedFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->genericFontFamilySettings().setFixed(font, script);
+    m_settings->notifyGenericFontFamilyChange();
 }
 
 void WebSettingsImpl::setSerifFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->genericFontFamilySettings().setSerif(font, script);
+    m_settings->notifyGenericFontFamilyChange();
 }
 
 void WebSettingsImpl::setSansSerifFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->genericFontFamilySettings().setSansSerif(font, script);
+    m_settings->notifyGenericFontFamilyChange();
 }
 
 void WebSettingsImpl::setCursiveFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->genericFontFamilySettings().setCursive(font, script);
+    m_settings->notifyGenericFontFamilyChange();
 }
 
 void WebSettingsImpl::setFantasyFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->genericFontFamilySettings().setFantasy(font, script);
+    m_settings->notifyGenericFontFamilyChange();
 }
 
 void WebSettingsImpl::setPictographFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->genericFontFamilySettings().setPictograph(font, script);
+    m_settings->notifyGenericFontFamilyChange();
 }
 
 void WebSettingsImpl::setDefaultFontSize(int size)