Add a snapshot of flutter/engine/src/build to our sdk

build/java_strings_grd.gypi

+# 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.
+
+# This file is meant to be included into a target to provide a rule
+# to generate localized strings.xml from a grd file.
+#
+# To use this, create a gyp target with the following form:
+# {
+#   'target_name': 'my-package_strings_grd',
+#   'type': 'none',
+#   'variables': {
+#     'grd_file': 'path/to/grd/file',
+#   },
+#   'includes': ['path/to/this/gypi/file'],
+# }
+#
+# Required variables:
+#  grd_file - The path to the grd file to use.
+{
+  'variables': {
+    'res_grit_dir': '<(INTERMEDIATE_DIR)/<(_target_name)/res_grit',
+    'grit_grd_file': '<(grd_file)',
+    'resource_zip_path': '<(PRODUCT_DIR)/res.java/<(_target_name).zip',
+    'grit_additional_defines': ['-E', 'ANDROID_JAVA_TAGGED_ONLY=false'],
+    'grit_out_dir': '<(res_grit_dir)',
+    # resource_ids is unneeded since we don't generate .h headers.
+    'grit_resource_ids': '',
+    'grit_outputs': [
+      '<!@pymod_do_main(grit_info <@(grit_defines) <@(grit_additional_defines) '
+          '--outputs \'<(grit_out_dir)\' '
+          '<(grit_grd_file) -f "<(grit_resource_ids)")',
+          ]
+  },
+  'all_dependent_settings': {
+    'variables': {
+      'additional_input_paths': ['<(resource_zip_path)'],
+      'dependencies_res_zip_paths': ['<(resource_zip_path)'],
+    },
+  },
+  'actions': [
+    {
+      'action_name': 'generate_localized_strings_xml',
+      'includes': ['../build/grit_action.gypi'],
+    },
+    {
+      'action_name': 'create_resources_zip',
+      'inputs': [
+          '<(DEPTH)/build/android/gyp/zip.py',
+          '<@(grit_outputs)',
+      ],
+      'outputs': [
+          '<(resource_zip_path)',
+      ],
+      'action': [
+          'python', '<(DEPTH)/build/android/gyp/zip.py',
+          '--input-dir', '<(res_grit_dir)',
+          '--output', '<(resource_zip_path)',
+      ],
+    }
+  ],
+}