Simplify mojo/application/public/cpp/BUILD.gn to call the target cpp instead of application.

components/view_manager/public/cpp/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/module_args/mojo.gni")
 import("//third_party/mojo/src/mojo/public/mojo_sdk.gni")
 
 mojo_sdk_source_set("cpp") {
   restrict_external_deps = false
   sources = [
@@ skipping 16 matching lines @@
     "view_tracker.h",
   ]
 
   public_deps = [
     ":common",
   ]
 
   deps = [
     "../interfaces",
     "//components/surfaces/public/interfaces:surface_id",
-    "//mojo/application/public/cpp:application",
+    "//mojo/application/public/cpp",
     "//mojo/application/public/interfaces",
     "//ui/mojo/events:interfaces",
     "//ui/mojo/geometry:interfaces",
     "//base",
   ]
 
   mojo_sdk_deps = [
     "mojo/public/c/gles2:headers",
     "mojo/public/cpp/bindings:bindings",
     "mojo/public/cpp/system",
   ]
 }
 
 source_set("common") {
   sources = [
     "keys.cc",
     "keys.h",
     "types.h",
     "util.h",
   ]
 }