[android] Generate strings.xml for android_webview.

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.
+{
+  'dependencies': [
+    '<(DEPTH)/build/android/setup.gyp:build_output_dirs'

[mkosiba (inactive), 2014/05/09 12:24:19]

not needed, the rule doesn't need any of the dirs from there and it messes with
the webview build.

+  ],
+  'variables': {
+    'intermediate_dir': '<(PRODUCT_DIR)/<(_target_name)',
+    'res_grit_dir': '<(intermediate_dir)/res_grit',
+    'grit_grd_file': '<(grd_file)',
+    'resource_input_paths': [
+      '<!@pymod_do_main(grit_info <@(grit_defines) --outputs "<(res_grit_dir)" <(grd_file))'
+    ],
+  },
+  'all_dependent_settings': {
+    'variables': {
+      'additional_res_dirs': ['<@(res_grit_dir)'],
+      'dependencies_res_files': ['<@(resource_input_paths)'],
+      'dependencies_res_input_dirs': ['<@(res_grit_dir)'],
+    },
+  },
+  'actions': [
+    {
+      'action_name': 'generate_localized_strings_xml',
+      'variables': {
+        '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': '',
+      },
+      'includes': ['../build/grit_action.gypi'],
+    },
+  ],
+}