Allow sky apps to be consumers of mojo services

sky/engine/bindings2/builtin.cc

Index: sky/engine/bindings2/builtin.cc
diff --git a/sky/engine/bindings2/builtin.cc b/sky/engine/bindings2/builtin.cc
index 9cb928d09a0134e03718e02ff7c3f7ad8e6cad77..d1f4c8e88c20038f6b506e053de2495a60e5da36 100644
--- a/sky/engine/bindings2/builtin.cc
+++ b/sky/engine/bindings2/builtin.cc
@@ -8,6 +8,7 @@
 #include "base/logging.h"
 #include "dart/runtime/include/dart_api.h"
 #include "gen/sky/bindings/DartGlobal.h"
+#include "mojo_natives.h"
 #include "sky/engine/bindings2/builtin_natives.h"
 #include "sky/engine/bindings2/builtin_sky.h"
 
@@ -25,6 +26,8 @@ const LibraryDescriptor kBuiltinLibraries[] = {
     /* { url_, has_natives_, native_symbol_, native_resolver_ } */
     {"dart:sky_builtin", true, BuiltinNatives::NativeSymbol, BuiltinNatives::NativeLookup},
     {"dart:sky", true, skySnapshotSymbolizer, skySnapshotResolver},
+    {"dart:mojo_bindings", false, nullptr, nullptr},
+    {"dart:mojo_core", true, MojoNativeSymbol, MojoNativeLookup},
 };
 
 }  // namespace