Merge the Sky Engine changes from the SkyDart branch

sky/engine/core/app/Module.cpp

Index: sky/engine/core/app/Module.cpp
diff --git a/sky/engine/core/app/Module.cpp b/sky/engine/core/app/Module.cpp
index 02dc428899d5e9ce7226f46c9a7ac1ec3a49a33b..ed1f97223cc0ad39e675d3349ac472734092200d 100644
--- a/sky/engine/core/app/Module.cpp
+++ b/sky/engine/core/app/Module.cpp
@@ -29,14 +29,4 @@ Application* Module::GetApplication() {
   return application();
 }
 
-void Module::setExports(ScriptState*, const ScriptValue& exports) {
-  exports_ = exports;
-}
-
-const ScriptValue& Module::exports(ScriptState* scriptState) const {
-  if (exports_.isEmpty())
-    exports_ = ScriptValue::createEmptyObject(scriptState);
-  return exports_;
-}
-
 } // namespace blink