Revert of Lock down the registration of blob:chrome-extension:// URLs

extensions/browser/extension_web_contents_observer.cc

Index: extensions/browser/extension_web_contents_observer.cc
diff --git a/extensions/browser/extension_web_contents_observer.cc b/extensions/browser/extension_web_contents_observer.cc
index 6f065256712a5bac065cde5100c4f81c3b96ea8a..52b9041a5ebdc170298bce4c76ea9938a7fad845 100644
--- a/extensions/browser/extension_web_contents_observer.cc
+++ b/extensions/browser/extension_web_contents_observer.cc
@@ -63,15 +63,6 @@
   if (!frame_extension)
     return;
 
-  // |render_frame_host->GetProcess()| is an extension process. Grant permission
-  // to commit pages from chrome-extension:// origins.
-  content::ChildProcessSecurityPolicy* security_policy =
-      content::ChildProcessSecurityPolicy::GetInstance();
-  int process_id = render_frame_host->GetProcess()->GetID();
-  security_policy->GrantScheme(process_id, extensions::kExtensionScheme);
-  security_policy->GrantScheme(process_id,
-                               extensions::kExtensionResourceScheme);
-
   // Notify the render frame of the view type.
   render_frame_host->Send(new ExtensionMsg_NotifyRenderViewType(
       render_frame_host->GetRoutingID(), GetViewType(web_contents())));