Adds plumbing to pass WebUI mojo::Handle from browser to renderer

mojo/mojo_public.gypi

 {
   'targets': [
     {
       'target_name': 'mojo_system',
       'type': 'shared_library',
       'defines': [
         'MOJO_SYSTEM_IMPLEMENTATION',
       ],
       'include_dirs': [
         '..',
@@ skipping 139 matching lines @@
         'public/bindings/tests/math_calculator.mojom',
         'public/bindings/tests/remote_ptr_unittest.cc',
         'public/bindings/tests/request_response_unittest.cc',
         'public/bindings/tests/router_unittest.cc',
         'public/bindings/tests/sample_factory.mojom',
         'public/bindings/tests/sample_interfaces.mojom',
         'public/bindings/tests/sample_service_unittest.cc',
         'public/bindings/tests/test_structs.mojom',
         'public/bindings/tests/type_conversion_unittest.cc',
       ],
+      'variables': {
+        'mojom_base_output_dir': 'mojo',
+      },
       'includes': [ 'public/bindings/mojom_bindings_generator.gypi' ],
     },
     {
       'target_name': 'mojo_public_environment_unittests',
       'type': 'executable',
       'dependencies': [
         '../base/base.gyp:base',
         '../testing/gtest.gyp:gtest',
         'mojo_environment_standalone',
         'mojo_public_test_utils',
@@ skipping 71 matching lines @@
       'include_dirs': [
         '..'
       ],
       'sources': [
         'public/bindings/allocation_scope.h',
         'public/bindings/array.h',
         'public/bindings/buffer.h',
         'public/bindings/callback.h',
         'public/bindings/error_handler.h',
         'public/bindings/interface.h',
+        'public/bindings/js/constants.cc',
+        'public/bindings/js/constants.h',
         'public/bindings/message.h',
         'public/bindings/passable.h',
         'public/bindings/remote_ptr.h',
         'public/bindings/sync_dispatcher.h',
         'public/bindings/type_converter.h',
         'public/bindings/lib/array.cc',
         'public/bindings/lib/array_internal.h',
         'public/bindings/lib/array_internal.cc',
         'public/bindings/lib/bindings_internal.h',
         'public/bindings/lib/bindings_serialization.cc',
@@ skipping 21 matching lines @@
       ],
     },
     {
       'target_name': 'mojo_sample_service',
       'type': 'static_library',
       'sources': [
         'public/bindings/tests/sample_service.mojom',
         'public/bindings/tests/sample_import.mojom',
         'public/bindings/tests/sample_import2.mojom',
       ],
+      'variables': {
+        'mojom_base_output_dir': 'mojo',
+      },
       'includes': [ 'public/bindings/mojom_bindings_generator.gypi' ],
       'export_dependent_settings': [
         'mojo_bindings',
         'mojo_system',
       ],
       'dependencies': [
         'mojo_bindings',
         'mojo_system',
       ],
     },
@@ skipping 46 matching lines @@
     {
       'target_name': 'mojo_shell_bindings',
       'type': 'static_library',
       'sources': [
         'public/shell/lib/application.cc',
         'public/shell/lib/service.cc',
         'public/shell/application.h',
         'public/shell/service.h',
         'public/shell/shell.mojom',
       ],
+      'variables': {
+        'mojom_base_output_dir': 'mojo',
+      },
       'includes': [ 'public/bindings/mojom_bindings_generator.gypi' ],
       'dependencies': [
         'mojo_bindings',
         'mojo_system',
       ],
       'export_dependent_settings': [
         'mojo_bindings',
         'mojo_system',
       ],
     },
   ],
 }