setViewportEnabled on InternalSettings

Source/core/page/Settings.cpp

Index: Source/core/page/Settings.cpp
diff --git a/Source/core/page/Settings.cpp b/Source/core/page/Settings.cpp
index 68a69d3e5665b447ff0007471d7eb22468b3373f..c9c952a64061f2ffea955471ab6ceb617f16aff8 100644
--- a/Source/core/page/Settings.cpp
+++ b/Source/core/page/Settings.cpp
@@ -137,6 +137,7 @@ Settings::Settings(Page* page)
     , m_cssStickyPositionEnabled(true)
     , m_dnsPrefetchingEnabled(false)
     , m_touchEventEmulationEnabled(false)
+    , m_viewportEnabled(false)
     , m_setImageLoadingSettingsTimer(this, &Settings::imageLoadingSettingsTimerFired)
 {
     m_page = page; // Page is not yet fully initialized wen constructing Settings, so keeping m_page null over initializeDefaultFontFamilies() call.
@@ -380,4 +381,14 @@ bool Settings::openGLMultisamplingEnabled()
     return m_openGLMultisamplingEnabled;
 }
 
+void Settings::setViewportEnabled(bool enabled)
+{
+    if (m_viewportEnabled == enabled)
+        return;
+
+    m_viewportEnabled = enabled;
+    if (m_page->mainFrame())
+        m_page->mainFrame()->document()->updateViewportArguments();
+}
+
 } // namespace WebCore