Revert of views: Move TOOLKIT_VIEWS definition in //ui/views/ from root.

chrome/browser/extensions/BUILD.gn

Index: chrome/browser/extensions/BUILD.gn
diff --git a/chrome/browser/extensions/BUILD.gn b/chrome/browser/extensions/BUILD.gn
index 61bb6de4d9fb6097cb34a64f0ae4114317e24600..1befad5a48a140797e533e78934f546b4936c204 100644
--- a/chrome/browser/extensions/BUILD.gn
+++ b/chrome/browser/extensions/BUILD.gn
@@ -116,17 +116,6 @@
     ]
   }
 
-  if (use_aura) {
-    deps += [
-      "//ui/keyboard",
-      "//ui/keyboard:resources",
-    ]
-  }
-
-  if (toolkit_views) {
-    deps += [ "//ui/views" ]
-  }
-
   if (is_linux) {
     configs += [ "//build/config/linux:fontconfig" ]
     deps += [ "//dbus" ]
@@ -167,6 +156,13 @@
     sources += [ "api/braille_display_private/braille_controller_stub.cc" ]
   }
 
+  if (use_aura) {
+    deps += [
+      "//ui/keyboard",
+      "//ui/keyboard:resources",
+    ]
+  }
+
   # chromeos uses its own global_shortcut_listener, _x11 is not necessary.
   if (is_chromeos || !use_x11) {
     sources -= [