Add cloud_print to the GN build.

cloud_print/service/win/service.gyp

Index: cloud_print/service/win/service.gyp
diff --git a/cloud_print/service/win/service.gyp b/cloud_print/service/win/service.gyp
index 0019b6f1ca913ae6f19322a100aa4f311c1fe8ad..5434c497159b4644f7e26ed3d0a62f72c0cbed90 100644
--- a/cloud_print/service/win/service.gyp
+++ b/cloud_print/service/win/service.gyp
@@ -22,11 +22,10 @@
       '_ATL_NO_AUTOMATIC_NAMESPACE',
       '_ATL_NO_EXCEPTIONS',
     ],
-    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
-    'msvs_disabled_warnings': [ 4267, ],
   },
   'targets': [
     {
+      # GN version: //cloud_print/service/win:cloud_print_service
       'target_name': 'cloud_print_service',
       'type': 'executable',
       'sources': [
@@ -51,6 +50,7 @@
       },
     },
     {
+      # GN version: //cloud_print/service/win:cloud_print_service_config
       'target_name': 'cloud_print_service_config',
       'type': 'executable',
       'sources': [
@@ -99,6 +99,7 @@
       },
     },
     {
+      # GN version: //cloud_print/service/win:cloud_print_service_setup
       'target_name': 'cloud_print_service_setup',
       'type': 'executable',
       'sources': [