Move permission check from GuestViewInternal to derived GuestView

chrome/browser/guest_view/guest_view_base.h

Index: chrome/browser/guest_view/guest_view_base.h
diff --git a/chrome/browser/guest_view/guest_view_base.h b/chrome/browser/guest_view/guest_view_base.h
index 2e6c8a6373c24eb58ff530626925986b8d070bd1..ff7ac3096612140b50fd4a37352df6964e863f2f 100644
--- a/chrome/browser/guest_view/guest_view_base.h
+++ b/chrome/browser/guest_view/guest_view_base.h
@@ -116,6 +116,12 @@ class GuestViewBase : public content::BrowserPluginGuestDelegate,
   // to destruction.
   virtual void WillDestroy() {}
 
+  // This method is to be implemented by the derived class. It determines
+  // whether the guest view type of the derived class can be used by the
+  // provided embedder extension ID.
+  virtual bool CanEmbedderUseGuestView(
+      const std::string& embedder_extension_id) = 0;
+
   // This method is to be implemented by the derived class. Given a set of
   // initialization parameters, a concrete subclass of GuestViewBase can
   // create a specialized WebContents that it returns back to GuestViewBase.