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

third_party/android_media/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/android/rules.gni")
 
 assert(is_android)
 
 android_resources("android_media_resources") {
   custom_package = "org.chromium.third_party.android.media"
   resource_dirs = [ "java/res" ]
   deps = [
     "//third_party/android_tools:android_support_v7_appcompat_resources",
     "//third_party/android_tools:android_support_v7_mediarouter_resources",
   ]
 }
 
 android_library("android_media_java") {
   DEPRECATED_java_in_dir = "java/src"
   deps = [
     ":android_media_resources",
+    "//third_party/android_tools:android_support_v13_java",
+    "//third_party/android_tools:android_support_v7_appcompat_java",
     "//third_party/android_tools:android_support_v7_mediarouter_java",
     "//third_party/android_tools:android_support_v7_mediarouter_resources",
-    "//third_party/android_tools:android_support_v7_appcompat_java",
-    "//third_party/android_tools:android_support_v13_java",
   ]
 }