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

ui/ozone/platform/cast/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/chromecast_build.gni")
 import("//ui/ozone/ozone.gni")
 
 # GYP version: cast.gypi:ozone_platform_cast
 # TODO(slan): gn check needs deps on ozone and media to pass. Correct this.
 source_set("cast") {
@@ skipping 16 matching lines @@
 
   # For EGL header included in surface_factory_cast.cc (needs EGL types).
   configs += [ "//third_party/khronos:khronos_headers" ]
 
   # For loading EGL functions using dlsym in surface_factory_cast.cc because we
   # do not want to statically link against EGL library.
   libs = [ "dl" ]
 
   deps = [
     "//base",
+    "//chromecast/graphics:libcast_graphics_1.0",
     "//chromecast/media/base:message_loop",
-    "//chromecast/graphics:libcast_graphics_1.0",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/ozone:ozone_base",
     "//ui/platform_window",
   ]
 }