Make new chrome UI security model the default.

chrome/renderer/render_thread.cc

Index: chrome/renderer/render_thread.cc
diff --git a/chrome/renderer/render_thread.cc b/chrome/renderer/render_thread.cc
index 92110a56f4e994d5de7d217ec38363e94b0a1c73..315a41895136278a25e6a00914ae4fdeaa09cd7f 100644
--- a/chrome/renderer/render_thread.cc
+++ b/chrome/renderer/render_thread.cc
@@ -864,12 +864,7 @@ void RenderThread::EnsureWebKitInitialized() {
   // also be unable to script anything but themselves (to help limit the damage
   // that a corrupt chrome: page could cause).
   WebString chrome_ui_scheme(ASCIIToUTF16(chrome::kChromeUIScheme));
-  if (command_line.HasSwitch(switches::kNewChromeUISecurityModel)) {
-    WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(chrome_ui_scheme);
-  } else {
-    WebSecurityPolicy::registerURLSchemeAsLocal(chrome_ui_scheme);
-    WebSecurityPolicy::registerURLSchemeAsNoAccess(chrome_ui_scheme);
-  }
+  WebSecurityPolicy::registerURLSchemeAsDisplayIsolated(chrome_ui_scheme);
 
   // chrome-extension: resources shouldn't trigger insecure content warnings.
   WebString extension_scheme(ASCIIToUTF16(chrome::kExtensionScheme));