Change the name of the generated pdf.sandbox.external for mozilla-cen…

…tral

This patch is blocking https://phabricator.services.mozilla.com/D148600.

gulpfile.js

@@ -393,12 +393,15 @@ function createSandboxExternal(defines) {
  saveComments: false,
  defines,
  };
- return gulp.src("./src/pdf.sandbox.external.js").pipe(
- transform("utf8", content => {
- content = preprocessor2.preprocessPDFJSCode(ctx, content);
- return `${licenseHeader}\n${content}`;
- })
- );
+ return gulp
+ .src("./src/pdf.sandbox.external.js")
+ .pipe(
+ transform("utf8", content => {
+ content = preprocessor2.preprocessPDFJSCode(ctx, content);
+ return `${licenseHeader}\n${content}`;
+ })
+ )
+ .pipe(rename("pdf.sandbox.external.jsm"));
 }
 
 function createTemporaryScriptingBundle(defines, extraOptions = undefined) {