Generate all extension schema namespaces as "api" and instead vary the generated bundle names.

extensions/browser/guest_view/extension_options/extension_options_guest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/guest_view/extension_options/extension_options_guest.h"
 
 #include "base/values.h"
 #include "components/crx_file/id_util.h"
 #include "components/guest_view/browser/guest_view_event.h"
 #include "components/guest_view/browser/guest_view_manager.h"
@@ skipping 13 matching lines @@
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/manifest_handlers/options_page_info.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "extensions/strings/grit/extensions_strings.h"
 #include "ipc/ipc_message_macros.h"
 
 using content::WebContents;
 using guest_view::GuestViewBase;
 using guest_view::GuestViewEvent;
-using namespace extensions::core_api;
+using namespace extensions::api;
 
 namespace extensions {
 
 // static
 const char ExtensionOptionsGuest::Type[] = "extensionoptions";
 
 ExtensionOptionsGuest::ExtensionOptionsGuest(
     content::WebContents* owner_web_contents)
     : GuestView<ExtensionOptionsGuest>(owner_web_contents),
       extension_options_guest_delegate_(
@@ skipping 180 matching lines @@
     SetGuestZoomLevelToMatchEmbedder();
 
     if (params.url.GetOrigin() != options_page_.GetOrigin()) {
       bad_message::ReceivedBadMessage(web_contents()->GetRenderProcessHost(),
                                       bad_message::EOG_BAD_ORIGIN);
     }
   }
 }
 
 }  // namespace extensions