Add a force-layout-height-to-zero layout mode to WebViewImpl

Source/web/WebSettingsImpl.cpp

Index: Source/web/WebSettingsImpl.cpp
diff --git a/Source/web/WebSettingsImpl.cpp b/Source/web/WebSettingsImpl.cpp
index be306879779080c1174cd123c59ed2e11a2b8bc0..b7d2b13fc1913f1b42734cf0673d421a9fd7f27a 100644
--- a/Source/web/WebSettingsImpl.cpp
+++ b/Source/web/WebSettingsImpl.cpp
@@ -75,6 +75,11 @@ void WebSettingsImpl::setFixedFontFamily(const WebString& font, UScriptCode scri
     m_settings->notifyGenericFontFamilyChange();
 }
 
+void WebSettingsImpl::setForceZeroLayoutHeight(bool enabled)
+{
+    m_settings->setForceZeroLayoutHeight(enabled);
+}
+
 void WebSettingsImpl::setSerifFontFamily(const WebString& font, UScriptCode script)
 {
     m_settings->genericFontFamilySettings().setSerif(font, script);