Mojo: Add the IInterfaceProvider interface.

mojo/mojo_public.gypi

Index: mojo/mojo_public.gypi
diff --git a/mojo/mojo_public.gypi b/mojo/mojo_public.gypi
index 118e1f1d76faa5f7e56d30851d31360b7cc618c4..c033749a4acc29ff408fcbb68cb28f8ac51ecf0a 100644
--- a/mojo/mojo_public.gypi
+++ b/mojo/mojo_public.gypi
@@ -356,6 +356,21 @@
       ],
     },
     {
+      # GN version: //mojo/public/interfaces/interface_provider:interface_provider
+      'target_name': 'mojo_interface_provider_bindings',
+      'type': 'static_library',
+      'sources': [
+        'public/interfaces/interface_provider/interface_provider.mojom',
+      ],
+      'includes': [ 'public/tools/bindings/mojom_bindings_generator.gypi' ],
+      'dependencies': [
+        'mojo_cpp_bindings',
+      ],
+      'export_dependent_settings': [
+        'mojo_cpp_bindings',
+      ],
+    },
+    {
       # GN version: //mojo/public/interfaces/service_provider:service_provider
       'target_name': 'mojo_service_provider_bindings',
       'type': 'static_library',