Set enable_app_list=1 now only on ChromeOS.

ash/resources/BUILD.gn

Index: ash/resources/BUILD.gn
diff --git a/ash/resources/BUILD.gn b/ash/resources/BUILD.gn
index 3640ffe92bda629aa42558b7f440db6624fa723f..6f2fd27ee4154ceb5947fd8246eab8b70a31783c 100644
--- a/ash/resources/BUILD.gn
+++ b/ash/resources/BUILD.gn
@@ -44,8 +44,14 @@ template("ash_test_resources") {
     ]
 
     if (toolkit_views) {
-      deps += [ "//ui/views/resources" ]
-      sources += [ "$root_gen_dir/ui/views/resources/views_resources_${percent}_percent.pak" ]
+      deps += [
+        "//ui/app_list/resources",
+        "//ui/views/resources",
+      ]
+      sources += [
+        "$root_gen_dir/ui/app_list/resources/app_list_resources_${percent}_percent.pak",
+        "$root_gen_dir/ui/views/resources/views_resources_${percent}_percent.pak",
+      ]
 
       if (percent == "100") {
         # TODO(msw): This seems bad, but follows repack_ui_test_pak's example.
@@ -59,11 +65,6 @@ template("ash_test_resources") {
       sources += [ "$root_gen_dir/ui/chromeos/resources/ui_chromeos_resources_${percent}_percent.pak" ]
       deps += [ "//ui/chromeos/resources" ]
     }
-
-    if (enable_app_list) {
-      sources += [ "$root_gen_dir/ui/app_list/resources/app_list_resources_${percent}_percent.pak" ]
-      deps += [ "//ui/app_list/resources" ]
-    }
   }
 }