Split out mojo_converters into its own target.

mojo/mojo.gyp

 # Copyright 2013 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.
 
 {
   'includes': [
-    'mojo_converters.gypi',
     'mojo_variables.gypi',
   ],
   'targets': [
     {
       # GN version: //mojo
       'target_name': 'mojo',
       'type': 'none',
       'dependencies': [
         'edk/mojo_edk.gyp:mojo_edk',
         'mojo_application_manager',
         'mojo_application_manager_unittests',
         'mojo_base.gyp:mojo_base',
-        'mojo_geometry_lib',
-        'mojo_input_events_lib',
+        'mojo_geometry_converters.gyp:mojo_geometry_lib',
+        'mojo_input_events_converters.gyp:mojo_input_events_lib',
         'mojo_js_unittests',
-        'mojo_surfaces_lib',
-        'mojo_surfaces_lib_unittests',
+        'mojo_surface_converters.gyp:mojo_surfaces_lib',
+        'mojo_surface_converters.gyp:mojo_surfaces_lib_unittests',
         'services/public/mojo_services_public.gyp:mojo_services_public',
         'public/mojo_public.gyp:mojo_public',
       ],
     },
     {
       # GN version: //mojo/application_manager
       'target_name': 'mojo_application_manager',
       'type': '<(component)',
       'defines': [
         'MOJO_APPLICATION_MANAGER_IMPLEMENTATION',
@@ skipping 58 matching lines @@
         'public/mojo_public.gyp:mojo_environment_standalone',
         'public/mojo_public.gyp:mojo_public_test_interfaces',
         'public/mojo_public.gyp:mojo_utility',
       ],
       'sources': [
         'bindings/js/tests/run_js_tests.cc',
       ],
     },
   ],
 }