More old files deletion.

build/config/ui.gni

Index: build/config/ui.gni
diff --git a/build/config/ui.gni b/build/config/ui.gni
index 7e334fd51c4c781b0142d408977633a025d0161d..d888fb39573332875f36cb1f29202844d8ed8d18 100644
--- a/build/config/ui.gni
+++ b/build/config/ui.gni
@@ -11,22 +11,6 @@
 #
 # See also build/config/features.gni
 
-declare_args() {
-  # Indicates if Ash is enabled. Ash is the Aura Shell which provides a
-  # desktop-like environment for Aura. Requires use_aura = true
-  use_ash = is_win || is_linux
-
-  # Support ChromeOS touchpad gestures with ozone.
-  use_evdev_gestures = false
-
-  # Indicates if Aura is enabled. Aura is a low-level windowing library, sort
-  # of a replacement for GDI or GTK.
-  use_aura = is_win || is_linux
-
-  # True means the UI is built using the "views" framework.
-  toolkit_views = is_win || is_chromeos || use_aura
-}
-
 # Additional dependent variables -----------------------------------------------
 #
 # These variables depend on other variables and can't be set externally.
@@ -41,17 +25,13 @@ if (is_linux) {
 
 # Use GPU accelerated cross process image transport by default on linux builds
 # with the Aura window manager.
-ui_compositor_image_transport = use_aura && is_linux
-
-use_default_render_theme = use_aura || is_linux
+ui_compositor_image_transport = is_linux
 
 # Indicates if the UI toolkit depends on X11.
 use_x11 = is_linux
 
 use_glib = is_linux
 
-use_clipboard_aurax11 = is_linux && use_aura && use_x11
-
 use_athena = false
 
 enable_hidpi = is_mac || is_chromeos || is_win