Make gn check //mojo/public/* pass

mojo/public/cpp/application/BUILD.gn

Index: mojo/public/cpp/application/BUILD.gn
diff --git a/mojo/public/cpp/application/BUILD.gn b/mojo/public/cpp/application/BUILD.gn
index 53b5cb0f250b39431d5107e3258aa9da4bd668d7..900edeff8cd31522a37366b7a26dd8ae3b0375c6 100644
--- a/mojo/public/cpp/application/BUILD.gn
+++ b/mojo/public/cpp/application/BUILD.gn
@@ -26,6 +26,8 @@ source_set("application") {
 
   deps = [
     "//mojo/public/cpp/bindings",
+    "//mojo/public/cpp/environment",
+    "//mojo/public/cpp/system",
     "//mojo/public/interfaces/application",
   ]
 }
@@ -36,8 +38,10 @@ source_set("standalone") {
     "lib/application_runner.cc"
   ]
 
+  public_deps = [ ":application" ]
+
   deps = [
-    ":application",
     "//mojo/public/cpp/environment:standalone",
+    "//mojo/public/cpp/utility",
   ]
 }