XXX test gn format everything

content/browser/tracing/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")
 
 # generate_about_tracing puts its files in this directory
 tracing_gen_dir = "$root_gen_dir/content/browser/tracing"
 
 # The script just writes filename with no dirs to the .grd, so we always need
 # this file to be in the same directory as the inputs.
 tracing_grd = "$tracing_gen_dir/tracing_resources.grd"
 
 action("generate_tracing_grd") {
   visibility = [ ":*" ]
   script = "generate_trace_viewer_grd.py"
 
   input_pages = [
     "$tracing_gen_dir/about_tracing.html",
     "$tracing_gen_dir/about_tracing.js",
   ]
   inputs = input_pages
   outputs = [ tracing_grd ]
 
   args = rebase_path(input_pages, target_gen_dir) + [
-    "--output", rebase_path(tracing_grd, root_build_dir),
-  ]
+           "--output",
+           rebase_path(tracing_grd, root_build_dir),
+         ]
 
   deps = [
     "//third_party/trace-viewer:generate_about_tracing",
   ]
 }
 
 grit("resources") {
   source = tracing_grd
   outputs = [
     "grit/tracing_resources.h",
     "tracing_resources.pak",
   ]
 
   # resource_ids has an entry for our .grd file that looks like:
   # "<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing/tracing_resources.grd"
   # and what we pass here should make that resolve to our .grd file.
-  defines = [
-    "SHARED_INTERMEDIATE_DIR=" + rebase_path(root_gen_dir, root_build_dir),
+  defines =
+      [ "SHARED_INTERMEDIATE_DIR=" + rebase_path(root_gen_dir, root_build_dir) ]
+
+  deps = [
+    ":generate_tracing_grd",
   ]
-
-  deps = [ ":generate_tracing_grd" ]
 }