Revert "Delete the ViewManager and WindowManager services."

mojo/services/view_manager/cpp/BUILD.gn

Index: mojo/services/view_manager/cpp/BUILD.gn
diff --git a/mojo/services/view_manager/cpp/BUILD.gn b/mojo/services/view_manager/cpp/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..156c437916e69fc76d6156af44f92c38bc2cab94
--- /dev/null
+++ b/mojo/services/view_manager/cpp/BUILD.gn
@@ -0,0 +1,61 @@
+# 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("$mojo_sdk_root/mojo/public/mojo_sdk.gni")
+
+mojo_sdk_source_set("cpp") {
+  restrict_external_deps = false
+  public_configs = [ "../../public/build/config:mojo_services" ]
+  sources = [
+    "lib/view.cc",
+    "lib/view_manager_client_factory.cc",
+    "lib/view_manager_client_impl.cc",
+    "lib/view_manager_client_impl.h",
+    "lib/view_manager_context.cc",
+    "lib/view_observer.cc",
+    "lib/view_private.cc",
+    "lib/view_private.h",
+    "view.h",
+    "view_manager.h",
+    "view_manager_client_factory.h",
+    "view_manager_context.h",
+    "view_manager_delegate.cc",
+    "view_manager_delegate.h",
+    "view_observer.h",
+    "view_property.h",
+    "view_tracker.cc",
+    "view_tracker.h",
+  ]
+
+  public_deps = [
+    ":common",
+  ]
+
+  deps = [
+    "../interfaces",
+    "../../geometry/interfaces",
+    "../../input_events/interfaces",
+    "../../surfaces/interfaces:surface_id",
+    "../../window_manager/interfaces",
+    "//base",
+  ]
+
+  mojo_sdk_deps = [
+    "mojo/public/cpp/application",
+    "mojo/public/cpp/bindings:bindings",
+    "mojo/public/cpp/system",
+    "mojo/public/interfaces/application",
+  ]
+}
+
+source_set("common") {
+  configs += [ "../../public/build/config:mojo_services" ]
+
+  sources = [
+    "keys.cc",
+    "keys.h",
+    "types.h",
+  ]
+}