Encode all grit outputs in .gn files

components/resources/BUILD.gn

 # Copyright 2014 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.
 
 import("//tools/grit/grit_rule.gni")
 
 # GYP version: components/components_resources.gyp:components_resources
 group("resources") {
   deps = [
     ":components_resources",
     ":components_scaled_resources",
   ]
 }
 
 # GYP version: components/components_resources.gyp
 #              (generate_components_resources action)
 grit("components_resources") {
   source = "components_resources.grd"
+  outputs = [
+    "grit/component_resources.h",
+    "component_resources.pak",
+  ]
 }
 
 # GYP version: components/components_resources.gyp
 #              (generate_scaled_components_resources action)
 grit("components_scaled_resources") {
   source = "components_scaled_resources.grd"
+  outputs = [
+    "grit/component_scaled_resources.h",
+    "component_resources_100_percent.pak",
+    "component_resources_200_percent.pak",
+  ]
 }