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

components/mus/ws/BUILD.gn

Index: components/mus/ws/BUILD.gn
diff --git a/components/mus/ws/BUILD.gn b/components/mus/ws/BUILD.gn
index 663d03a21bb2526641a51731e2c44e879f998a9a..ff6ad3579bc57e8bbb37c64ed0883b5579472b20 100644
--- a/components/mus/ws/BUILD.gn
+++ b/components/mus/ws/BUILD.gn
@@ -124,14 +124,14 @@ test("window_manager_unittests") {
   ]
 
   deps = [
-    ":test_support",
     ":lib",
+    ":test_support",
     "//base",
     "//base/test:test_config",
     "//components/mus/common",
-    "//components/mus/surfaces",
     "//components/mus/public/cpp",
     "//components/mus/public/interfaces",
+    "//components/mus/surfaces",
     "//mojo/application/public/interfaces",
     "//mojo/converters/geometry",
     "//mojo/converters/input_events",
@@ -140,13 +140,13 @@ test("window_manager_unittests") {
     "//mojo/gles2",
     "//mojo/platform_handle",
     "//mojo/public/cpp/bindings:bindings",
-    "//third_party/mojo/src/mojo/edk/test:run_all_unittests",
-    "//ui/mojo/geometry:interfaces",
     "//testing/gtest",
+    "//third_party/mojo/src/mojo/edk/test:run_all_unittests",
     "//ui/events",
     "//ui/gfx",
     "//ui/gfx:test_support",
     "//ui/gfx/geometry",
+    "//ui/mojo/geometry:interfaces",
   ]
 
   if (!is_android) {  # TODO(GYP) Enable on Android when osmesa links.