supportsNonImageMIMEType 42 content/child/simple_webmimeregistry_impl.h virtual blink::WebMimeRegistry::SupportsType supportsNonImageMIMEType( supportsNonImageMIMEType 95 content/worker/worker_webkitplatformsupport_impl.h virtual blink::WebMimeRegistry::SupportsType supportsNonImageMIMEType(