supportsJavaScriptMIMEType 31 content/child/simple_webmimeregistry_impl.h virtual blink::WebMimeRegistry::SupportsType supportsJavaScriptMIMEType( supportsJavaScriptMIMEType 83 content/worker/worker_webkitplatformsupport_impl.h virtual blink::WebMimeRegistry::SupportsType supportsJavaScriptMIMEType(