Change mojo application name to {name}.mojo

mojo/services/window_manager/BUILD.gn

Index: mojo/services/window_manager/BUILD.gn
diff --git a/mojo/services/window_manager/BUILD.gn b/mojo/services/window_manager/BUILD.gn
index 2ae22195b0d9770c62babeca4f142b262ad23e47..1fdcb6503e5c6274d5d088dab17525d81b6e652d 100644
--- a/mojo/services/window_manager/BUILD.gn
+++ b/mojo/services/window_manager/BUILD.gn
@@ -3,9 +3,9 @@
 # found in the LICENSE file.
 
 import("//build/config/ui.gni")
+import("//mojo/public/mojo_application.gni")
 
-# GYP version: mojo/mojo_services.gypi:mojo_core_window_manager
-shared_library("window_manager") {
+mojo_native_application("window_manager") {
   sources = [ "main.cc" ]
 
   public_deps = [
@@ -20,7 +20,6 @@ shared_library("window_manager") {
   ]
 }
 
-# GYP version: mojo/mojo_services.gypi:mojo_core_window_manager_lib
 source_set("lib") {
   sources = [
     "basic_focus_rules.cc",
@@ -59,7 +58,6 @@ source_set("lib") {
   ]
 }
 
-# GYP version: mojo/mojo_services.gypi:mojo_core_window_manager_unittests
 test("window_manager_unittests") {
   sources = [
     "window_manager_api_unittest.cc",