Model <webview> and <appview> script injection after <extensionoptions>

extensions/common/feature_switch.cc

Index: extensions/common/feature_switch.cc
diff --git a/extensions/common/feature_switch.cc b/extensions/common/feature_switch.cc
index a68ecd71b3d9389faab76e5a8fc2beaa9ee82254..b057863ce9dc74f574843ee37e942352842bf33e 100644
--- a/extensions/common/feature_switch.cc
+++ b/extensions/common/feature_switch.cc
@@ -43,7 +43,9 @@ class CommonSwitches {
                                FeatureSwitch::DEFAULT_DISABLED),
         embedded_extension_options(
             switches::kEmbeddedExtensionOptions,
-            FeatureSwitch::DEFAULT_DISABLED) {}
+            FeatureSwitch::DEFAULT_DISABLED),
+        app_view(switches::kAppView,
+                 FeatureSwitch::DEFAULT_DISABLED) {}
 
   // Enables extensions to be easily installed from sites other than the web
   // store.
@@ -60,6 +62,7 @@ class CommonSwitches {
   FeatureSwitch extension_action_redesign;
   FeatureSwitch scripts_require_action;
   FeatureSwitch embedded_extension_options;
+  FeatureSwitch app_view;
 };
 
 base::LazyInstance<CommonSwitches> g_common_switches =
@@ -91,6 +94,9 @@ FeatureSwitch* FeatureSwitch::scripts_require_action() {
 FeatureSwitch* FeatureSwitch::embedded_extension_options() {
   return &g_common_switches.Get().embedded_extension_options;
 }
+FeatureSwitch* FeatureSwitch::app_view() {
+  return &g_common_switches.Get().app_view;
+}
 
 FeatureSwitch::ScopedOverride::ScopedOverride(FeatureSwitch* feature,
                                               bool override_value)