[MD settings] moving settings strings to a separate grd file

chrome/app/BUILD.gn

Index: chrome/app/BUILD.gn
diff --git a/chrome/app/BUILD.gn b/chrome/app/BUILD.gn
index c4525c95bcd6a65cf2714671deaae3fc0158cf3d..0965e6d9077af0d3f96fdd53dc2f10f48d1f7be9 100644
--- a/chrome/app/BUILD.gn
+++ b/chrome/app/BUILD.gn
@@ -296,6 +296,21 @@ grit("chromium_strings") {
   ]
 }
 
+# GYP version: chrome/settings_strings.gyp:settings_strings
+#              (generate_settings_strings action)
+grit("settings_strings") {
+  source = "settings_strings.grd"
+  output_dir = "$root_gen_dir/chrome"
+  use_qualified_include = true
+  outputs = [
+    "grit/settings_strings.h",
+
+    # The settings strings are not being treated as strings because they are
+    # not translated (English only), this should change in late 2015.
+    "settings_strings.pak",
+  ]
+}
+
 source_set("test_support") {
   testonly = true
   visibility = [ "//chrome/test:test_support" ]