Teach PRESUBMIT.py how to run gn check for most of the mojo repo

mojo/shell/BUILD.gn

Index: mojo/shell/BUILD.gn
diff --git a/mojo/shell/BUILD.gn b/mojo/shell/BUILD.gn
index 38abdaed4a61fe93e5c83dbdf828a863f3881b8c..0cc631d49d6aaaab1adf9b3e15f720739f5bc075 100644
--- a/mojo/shell/BUILD.gn
+++ b/mojo/shell/BUILD.gn
@@ -47,6 +47,7 @@ executable("mojo_launcher") {
     "//mojo/common",
     "//mojo/edk/system",
     "//mojo/environment:chromium",
+    "//url",
   ]
 }
 
@@ -59,7 +60,10 @@ source_set("in_process_dynamic_service_runner") {
   ]
 
   deps = [
+    "//base",
     "//mojo/gles2",
+    "//mojo/public/cpp/system",
+    "//mojo/public/gles2:for_shared_library",
   ]
 }
 
@@ -110,14 +114,19 @@ source_set("lib") {
     "//base",
     "//base/third_party/dynamic_annotations",
     "//base:base_static",
+    "//gpu/command_buffer/service",
     "//mojo/application",
     "//mojo/application_manager",
     "//mojo/common",
     "//mojo/edk/system",
+    "//mojo/public/cpp/bindings",
+    "//mojo/public/cpp/system",
     "//mojo/public/interfaces/application",
     "//mojo/services/public/interfaces/network",
     "//mojo/shell/domain_socket",
     "//mojo/spy",
+    "//mojo/services/native_viewport:lib",
+    "//ui/gl",
   ]
 
   if (is_win) {
@@ -225,6 +234,12 @@ source_set("external_application_registrar_connection") {
 
   deps = [
     ":external_application_registrar_bindings",
+    "//base",
+    "//mojo/common",
+    "//mojo/edk/system",
+    "//mojo/public/cpp/bindings",
+    "//mojo/public/interfaces/application",
+    "//url",
   ]
 
   if (!is_win) {
@@ -249,18 +264,21 @@ test("mojo_shell_tests") {
   ]
 
   deps = [
+    ":in_process_dynamic_service_runner",
     ":lib",
     "//base",
-    "//base:i18n",
     "//base/test:test_support",
-    "//testing/gtest",
-    "//net:test_support",
-    "//url",
+    "//base:i18n",
     "//mojo/application_manager",
     "//mojo/common",
     "//mojo/edk/system",
     "//mojo/environment:chromium",
+    "//mojo/public/cpp/bindings",
+    "//mojo/public/cpp/system",
     "//mojo/services/test_service:bindings",
+    "//net:test_support",
+    "//testing/gtest",
+    "//url",
   ]
 
   datadeps = [
@@ -284,8 +302,10 @@ source_set("test_support") {
   ]
 
   deps = [
-    ":lib",
+    "//base",
+    "//mojo/application_manager",
     "//mojo/edk/system",
+    ":lib",
   ]
 }
 
@@ -299,15 +319,17 @@ test("external_application_tests") {
 
   deps = [
     ":lib",
+    ":external_application_registrar_bindings",
     ":external_application_registrar_connection",
     "//base",
     "//base/test:test_support",
-    "//testing/gtest",
-    "//url",
     "//mojo/application_manager",
     "//mojo/common",
     "//mojo/edk/system",
     "//mojo/environment:chromium",
+    "//mojo/shell/domain_socket",
     "//mojo/shell/domain_socket:tests",
+    "//testing/gtest",
+    "//url",
   ]
 }