Port chromevox build to GN.

This ports the chromevox build: chromevox and chromevox_tests targets to
gn.  Liblouis is still missing since it requires native client which is
not enabled for Chrome OS.

BUG=None

Review URL: https://codereview.chromium.org/1145243006

Cr-Commit-Position: refs/heads/master@{#338002}

.gn

@@ -120,6 +120,7 @@ exec_script_whitelist = [
   "//chrome/browser/BUILD.gn",
   "//chrome/browser/chromeos/BUILD.gn",
   "//chrome/browser/extensions/BUILD.gn",
+  "//chrome/browser/resources/chromeos/chromevox/BUILD.gn",
   "//chrome/browser/media/router/BUILD.gn",
   "//chrome/browser/ui/BUILD.gn",
   "//chrome/chrome_tests.gni",

build/secondary/tools/grit/grit_rule.gni

@@ -11,11 +11,10 @@
 #       Path to .grd file.
 #
 #   outputs (required)
-#       List of outputs from grit, relative to the target_gen_dir. If supplied,
-#       a call to Grit to compute the outputs can be skipped which will make
-#       GN run faster. Grit will verify at build time that this list is correct
-#       and will fail if there is a mismatch between the outputs specified by
-#       the .grd file and the outputs list here.
+#       List of outputs from grit, relative to the target_gen_dir. Grit will
+#       verify at build time that this list is correct and will fail if there
+#       is a mismatch between the outputs specified by the .grd file and the
+#       outputs list here.
 #
 #       To get this list, you can look in the .grd file for
 #       <output filename="..." and put those filename here. The base directory
@@ -50,6 +49,10 @@
 #       output_dir, but if multiple targets with the same name end up in
 #       the same output_dir, they can collide.
 #
+#   depfile_dir (optional)
+#       If set, used to store the depfile and corresponding stamp file.
+#       Defaults to output_dir
+#
 #   use_qualified_include (optional)
 #       If set, output_dir is not added to include_dirs.
 #
@@ -331,6 +334,12 @@ template("grit") {
     grit_output_name = target_name
   }
 
+  if (defined(invoker.depfile_dir)) {
+    depfile_dir = invoker.depfile_dir
+  } else {
+    depfile_dir = output_dir
+  }
+
   # These are all passed as arguments to the script so have to be relative to
   # the build directory.
   if (resource_ids != "") {
@@ -383,7 +392,7 @@ template("grit") {
     script = "//tools/grit/grit.py"
     inputs = grit_inputs
 
-    depfile = "$output_dir/${grit_output_name}_stamp.d"
+    depfile = "$depfile_dir/${grit_output_name}_stamp.d"
     outputs = [ "${depfile}.stamp" ] + grit_outputs
 
     args = [

chrome/BUILD.gn

@@ -425,14 +425,8 @@ group("extra_resources") {
     ]
   }
 
-  if (enable_chromevox_next) {
-    deps += [
-      #'browser/resources/chromeos/chromevox2/chromevox.gyp:chromevox2',  TODO(GYP)
-    ]
-  } else {
-    deps += [
-      #'browser/resources/chromeos/chromevox/chromevox.gyp:chromevox',  TODO(GYP)
-    ]
+  if (is_chromeos) {
+    deps += [ "//chrome/browser/resources/chromeos/chromevox" ]
   }
 
   if (enable_extensions) {
@@ -715,7 +709,8 @@ template("chrome_repack_material_percent") {
   percent = invoker.percent
 
   repack_name = "${target_name}_repack"
-  repack_output_file = "$root_gen_dir/repack/chrome_material_${percent}_percent.pak"
+  repack_output_file =
+      "$root_gen_dir/repack/chrome_material_${percent}_percent.pak"
 
   copy_name = target_name
 

chrome/browser/resources/chromeos/braille_ime/BUILD.gn

@@ -0,0 +1,14 @@
+# Copyright 2015 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.
+
+assert(is_chromeos)
+
+copy("braille_ime_manifest") {
+  sources = [
+    "manifest.json",
+  ]
+  outputs = [
+    "$root_out_dir/resources/chromeos/braille_ime/manifest.json",
+  ]
+}