Fix gn check for components/mus

Someone removed this from gn check a while back when it was fine. This
fixes the issues that crept in and adds it back to .gn.

BUG=none
TEST=none
R=brettw@chromium.org
TBR=brettw@chromium.org

Review URL: https://codereview.chromium.org/1410743006

Cr-Commit-Position: refs/heads/master@{#357410}

.gn

@@ -106,7 +106,8 @@ check_targets = [
   #"//components/metrics/*",
   #"//components/metrics_services_manager/*",
   #"//components/mime_util/*",
-  #"//components/mus/*",
+  "//components/mus/*",
+
   #"//components/nacl/*",
   #"//components/navigation_interception/*",
   #"//components/navigation_metrics/*",

components/mus/example/mock_sysui/BUILD.gn

@@ -20,6 +20,7 @@ mojo_native_application("mock_sysui") {
     "//components/mus/public/interfaces",
     "//mojo/application/public/cpp",
     "//mojo/common:common_base",
+    "//mojo/converters/network",
     "//skia",
     "//ui/views",
     "//ui/views/mus",

components/mus/example/wm/window_layout.cc

@@ -8,7 +8,6 @@
 #include "components/mus/public/cpp/property_type_converters.h"
 #include "components/mus/public/cpp/window.h"
 #include "components/mus/public/cpp/window_property.h"
-#include "ui/mojo/geometry/geometry_util.h"
 
 WindowLayout::WindowLayout(mus::Window* owner) : LayoutManager(owner) {
   AddLayoutProperty(mus::mojom::WindowManager::kPreferredSize_Property);

components/mus/public/cpp/tests/BUILD.gn

@@ -11,6 +11,7 @@ source_set("unittest_support") {
   ]
 
   deps = [
+    "//base",
     "//components/mus/public/cpp",
   ]
 }