Initial implementation of the <extensionoptions> GuestView tag

chrome/browser/guest_view/guest_view_base.cc

Index: chrome/browser/guest_view/guest_view_base.cc
diff --git a/chrome/browser/guest_view/guest_view_base.cc b/chrome/browser/guest_view/guest_view_base.cc
index f2a0a9b13459f947b937a1fb1f3da7dffefee597..8342e60570f0ed61451fa79b72a1a2ffc4927ea4 100644
--- a/chrome/browser/guest_view/guest_view_base.cc
+++ b/chrome/browser/guest_view/guest_view_base.cc
@@ -8,6 +8,7 @@
 #include "base/lazy_instance.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/guest_view/app_view/app_view_guest.h"
+#include "chrome/browser/guest_view/extension_options/extension_options_guest.h"
 #include "chrome/browser/guest_view/guest_view_constants.h"
 #include "chrome/browser/guest_view/guest_view_manager.h"
 #include "chrome/browser/guest_view/web_view/web_view_guest.h"
@@ -19,6 +20,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
 #include "extensions/browser/event_router.h"
+#include "extensions/common/feature_switch.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 
 using content::WebContents;
@@ -144,6 +146,8 @@ GuestViewBase* GuestViewBase::Create(
     content::BrowserContext* browser_context,
     int guest_instance_id,
     const std::string& view_type) {
+  // TODO(fsamuel): All these string comparisons are a little inefficient. Maybe
+  // we want a registry of GuestView types in the future.
   if (view_type == WebViewGuest::Type) {
     return new WebViewGuest(browser_context, guest_instance_id);
   } else if (view_type == AppViewGuest::Type) {
@@ -152,6 +156,11 @@ GuestViewBase* GuestViewBase::Create(
       return NULL;
     }
     return new AppViewGuest(browser_context, guest_instance_id);
+  } else if (view_type == ExtensionOptionsGuest::Type) {
+    if (!extensions::FeatureSwitch::embedded_extension_options()->IsEnabled()) {
+      return NULL;
+    }
+    return new ExtensionOptionsGuest(browser_context, guest_instance_id);
   }
   NOTREACHED();
   return NULL;