[PoC] Reformat all BUILD.gn and *.gni files with new gn.

chromecast/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//build/config/locales.gni")
 import("//build/config/ui.gni")
 import("//chromecast/build/tests/cast_test.gni")
 import("//chromecast/chromecast.gni")
 import("//tools/grit/repack.gni")
@@ skipping 182 matching lines @@
   ]
 
   output = "$root_out_dir/assets/cast_shell.pak"
 
   deps = [
     "//chromecast/app:resources",
     "//content:resources",
     "//content/app/resources",
     "//content/app/strings",
     "//net:net_resources",
+    "//third_party/WebKit/public:image_resources_grit",
     "//third_party/WebKit/public:resources",
-    "//third_party/WebKit/public:image_resources_grit",
     "//ui/resources",
     "//ui/strings",
   ]
 
   if (chromecast_branding != "public") {
     sources +=
         [ "$root_gen_dir/chromecast/internal/shell/app/sound_resources.pak" ]
 
     deps += [ "//chromecast/internal/shell/app:chromecast_sound_resources" ]
 
@@ skipping 46 matching lines @@
          chromecast_branding == "google")
   args = [
            "-b",
            "$chromecast_branding",
            "-g",
            rebase_path("$root_gen_dir/chromecast_strings"),
            "-x",
            rebase_path("$root_out_dir/chromecast_locales"),
          ] + locales
 }