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

mojo/shell/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("//mojo/public/mojo_application.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 source_set("shell") {
   output_name = "mojo_shell"
@@ skipping 36 matching lines @@
     "//mojo/public/cpp/bindings",
     "//mojo/services/network/public/interfaces",
     "//mojo/services/updater",
     "//url",
   ]
   deps = [
     ":interfaces",
     "//base/third_party/dynamic_annotations",
     "//crypto:crypto",
     "//mojo/application/public/cpp:sources",
-    "//url",
-    "//third_party/mojo/src/mojo/edk/system",
     "//mojo/environment:chromium",
     "//mojo/util:filename_util",
+    "//third_party/mojo/src/mojo/edk/system",
+    "//url",
   ]
 }
 
 source_set("test_support") {
   testonly = true
   sources = [
     "capability_filter_test.cc",
     "capability_filter_test.h",
     "test_package_manager.cc",
     "test_package_manager.h",
@@ skipping 23 matching lines @@
   deps = [
     ":shell",
     ":test_bindings",
     ":test_support",
     "//base",
     "//mojo/application/public/cpp",
     "//mojo/fetcher",
     "//mojo/package_manager",
     "//mojo/public/cpp/system",
     "//mojo/util:filename_util",
+    "//testing/gtest",
     "//third_party/mojo/src/mojo/edk/test:run_all_unittests",
-    "//testing/gtest",
     "//url",
   ]
 }
 
 mojom("test_bindings") {
   sources = [
     "application_manager_apptests.mojom",
     "capability_filter_unittest.mojom",
     "test.mojom",
   ]
@@ skipping 59 matching lines @@
 
   deps = [
     ":test_bindings",
     "//base",
     "//mojo/application/public/cpp",
     "//mojo/common:common_base",
     "//mojo/converters/network",
     "//mojo/runner/child:test_native_main",
   ]
 }