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

media/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("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
@@ skipping 649 matching lines @@
 
   # TODO(wolenetz): Fix size_t to int truncation in win64.
   # See http://crbug.com/171009
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps = [
     ":media",
     ":test_support",
     "//base/allocator",
     "//base/test:test_support",
+    "//gpu:test_support",
     "//gpu/command_buffer/common",
-    "//gpu:test_support",
+    "//media/audio:test_support",
     "//media/audio:unittests",
-    "//media/audio:test_support",
+    "//media/base:test_support",
     "//media/base:unittests",
-    "//media/base:test_support",
     "//media/test:pipeline_integration_tests",
     "//skia",  # Direct dependency required to inherit config.
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/widevine/cdm:version_h",
     "//ui/gfx:test_support",
     "//url",
   ]
 
   if (is_android) {
@@ skipping 198 matching lines @@
     deps = [
       "//base/test:test_support",
       "//media",
       "//media:test_support",
       "//media/audio:test_support",
       "//media/base:test_support",
       "//media/test:pipeline_integration_tests",
       "//testing/gmock",
       "//testing/gtest",
       "//third_party/ffmpeg",
+      "//ui/gfx:test_support",
       "//ui/gfx/geometry",
-      "//ui/gfx:test_support",
     ]
   }
 }