Reland f5157480667e99269e0062e9df1df3875db with fix for compile failure.

ash/resources/vector_icons/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 action("aggregate_vector_icons") {
   visibility = [ ":*" ]
 
   script = "//ui/gfx/vector_icons/aggregate_vector_icons.py"
 
   icons = [
@@ skipping 188 matching lines @@
     "system_tray_rotation_lock_locked.1x.icon",
     "system_tray_rotation_lock_locked.icon",
     "system_tray_screen_share.1x.icon",
     "system_tray_screen_share.icon",
     "system_tray_tracing.1x.icon",
     "system_tray_tracing.icon",
     "system_tray_update.1x.icon",
     "system_tray_update.icon",
     "system_tray_volume_mute.1x.icon",
     "system_tray_volume_mute.icon",
+    "window_control_back.1x.icon",
+    "window_control_back.icon",
+    "window_control_close.1x.icon",
+    "window_control_close.icon",
+    "window_control_left_snapped.1x.icon",
+    "window_control_left_snapped.icon",
+    "window_control_maximize.1x.icon",
+    "window_control_maximize.icon",
+    "window_control_minimize.1x.icon",
+    "window_control_minimize.icon",
+    "window_control_restore.1x.icon",
+    "window_control_restore.icon",
+    "window_control_right_snapped.1x.icon",
+    "window_control_right_snapped.icon",
   ]
 
   output_cc = "$target_gen_dir/vector_icons.cc"
   output_h = "$target_gen_dir/vector_icons.h"
 
   inputs = icons
   inputs += [
     "vector_icons.cc.template",
     "vector_icons.h.template",
   ]
@@ skipping 15 matching lines @@
 source_set("vector_icons") {
   sources = get_target_outputs(":aggregate_vector_icons")
   sources += [ "//ui/gfx/vector_icon_types.h" ]
 
   deps = [
     ":aggregate_vector_icons",
     "//base",
     "//skia",
   ]
 }