ExtensionDelegate to abstract extension implementation

athena/athena.gyp

Index: athena/athena.gyp
diff --git a/athena/athena.gyp b/athena/athena.gyp
index f8ef9ccc98381f2d8357772e4fde925d53c46462..836f947d806d811a6ee23d0e137beef39009004d 100644
--- a/athena/athena.gyp
+++ b/athena/athena.gyp
@@ -103,6 +103,9 @@
         '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations',
         '../components/components.gyp:renderer_context_menu',
         '../components/components.gyp:web_modal',
+        '../extensions/extensions.gyp:extensions_browser',
+        '../extensions/extensions.gyp:extensions_common',
+        '../extensions/shell/app_shell.gyp:app_shell_lib',
         '../content/content.gyp:content_browser',
         '../ui/app_list/app_list.gyp:app_list',
         '../ui/keyboard/keyboard.gyp:keyboard',
@@ -133,6 +136,8 @@
         'content/web_activity.cc',
         'content/web_activity.h',
         'content/web_contents_view_delegate_factory_impl.cc',
+        'extensions/public/extensions_delegate.h',
+        'extensions/extensions_delegate_impl.cc',
         'virtual_keyboard/public/virtual_keyboard_manager.h',
         'virtual_keyboard/virtual_keyboard_manager_impl.cc',
       ],
@@ -170,6 +175,7 @@
       ],
       'sources': [
         'content/public/app_content_control_delegate.h',
+        'extensions/test/test_extensions_delegate.cc',
         'test/athena_test_base.cc',
         'test/athena_test_base.h',
         'test/athena_test_helper.cc',