Add gn template for vector icon actions.

ui/views/BUILD.gn

Index: ui/views/BUILD.gn
diff --git a/ui/views/BUILD.gn b/ui/views/BUILD.gn
index 39ebd400ff318befd803d00b226fe3e9b7a9d2db..fd6db351971f8d6b7ce3e92934913e009b6f5afe 100644
--- a/ui/views/BUILD.gn
+++ b/ui/views/BUILD.gn
@@ -7,57 +7,34 @@ import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//ui/base/ui_features.gni")
 import("//ui/ozone/ozone.gni")
+import("//ui/vector_icons/vector_icons.gni")
 
 config("flags") {
   defines = [ "TOOLKIT_VIEWS=1" ]
 }
 
-action("aggregate_vector_icons") {
-  visibility = [ ":*" ]
-
-  script = "//ui/gfx/vector_icons/aggregate_vector_icons.py"
+aggregate_vector_icons("views_vector_icons") {
+  icon_directory = "vector_icons"
 
   icons = [
-    "vector_icons/checkbox_active.icon",
-    "vector_icons/checkbox_normal.icon",
-    "vector_icons/menu_check.1x.icon",
-    "vector_icons/menu_check.icon",
-    "vector_icons/menu_radio_empty.icon",
-    "vector_icons/menu_radio_selected.icon",
-    "vector_icons/radio_button_active.icon",
-    "vector_icons/radio_button_normal.icon",
-    "vector_icons/submenu_arrow.1x.icon",
-    "vector_icons/submenu_arrow.icon",
+    "checkbox_active.icon",
+    "checkbox_normal.icon",
+    "menu_check.1x.icon",
+    "menu_check.icon",
+    "menu_radio_empty.icon",
+    "menu_radio_selected.icon",
+    "radio_button_active.icon",
+    "radio_button_normal.icon",
+    "submenu_arrow.1x.icon",
+    "submenu_arrow.icon",
   ]
 
   if (is_mac) {
     icons += [
-      "vector_icons/combobox_arrow_mac_enabled.icon",
-      "vector_icons/combobox_arrow_mac_disabled.icon",
+      "combobox_arrow_mac_enabled.icon",
+      "combobox_arrow_mac_disabled.icon",
     ]
   }
-
-  output_cc = "$target_gen_dir/vector_icons.cc"
-  output_h = "$target_gen_dir/vector_icons.h"
-
-  inputs = icons
-  inputs += [
-    "vector_icons/vector_icons.cc.template",
-    "vector_icons/vector_icons.h.template",
-  ]
-  outputs = [
-    output_cc,
-    output_h,
-  ]
-
-  response_file_contents = rebase_path(icons, root_build_dir)
-
-  args = [
-    "--working_directory=" + rebase_path("./vector_icons"),
-    "--file_list={{response_file_name}}",
-    "--output_cc=" + rebase_path(output_cc, root_build_dir),
-    "--output_h=" + rebase_path(output_h, root_build_dir),
-  ]
 }
 
 component("views") {
@@ -433,7 +410,7 @@ component("views") {
     "word_lookup_client.h",
   ]
 
-  sources += get_target_outputs(":aggregate_vector_icons")
+  sources += get_target_outputs(":views_vector_icons")
 
   configs += [
     "//build/config:precompiled_headers",
@@ -445,7 +422,7 @@ component("views") {
   defines = [ "VIEWS_IMPLEMENTATION" ]
 
   deps = [
-    ":aggregate_vector_icons",
+    ":views_vector_icons",
     "//base:i18n",
     "//base/third_party/dynamic_annotations",
     "//cc/paint",